Properties of Matter NOTES © 2008 by Tim F. Rowbotham Pure Substances A pure substance is matter that always has exactly the same composition. Every sample of a substance has the same properties. An element is a substance that contains only ONE TYPE OF ATOM. A compound contains only ONE TYPE OF MOLECULE (molecules are atoms that are chemically combined in a fixed proportion). Examples of Substances Examples of ELEMENTS are: carbon, nitrogen, oxygen, & gold The short way to write down an element’s name is called a chemical symbol. (C, N, O, & Au) Examples of COMPOUNDS are: water, carbon dioxide, salt, & sugar The short way to show the number of elements in a compound is called a chemical formula. (H2O, CO2, NaCl, C12H22O11) Learning Check Questions Ready your remote Which type of substance contains only one type of atom? 0% 0% 0% 0% 1. Compound 2.Element 3.Mixture 4.Solution Which type of substance contains more than one type of atom but only one type of molecule? 0% 0% 0% 0% 1. Compound 2.Element 3.Mixture 4.Solution Counting Atoms in Compounds Using the chemical formula for each compound, determine the number of atoms in each compound. H2O 0% 0% 0% 0% 1. 2. 3. 4. 2 hydrogen & 2 oxygen atoms 2 hydrogen & 1 oxygen atom 1 hydrogen & 2 oxygen atoms 2 hydrogen & 0 oxygen atoms C3H8 0% 0% 0% 0% 1. 2. 3. 4. 3 carbon & 8 hydrogen atoms 3 carbon & 3 hydrogen atoms 8 carbon & 3 hydrogen atoms 11 carbon & 8 hydrogen atoms CO2 0% 0% 0% 0% 1. 2. 3. 4. 2 carbon & 2 oxygen atoms 2 carbon & 1 oxygen atom 1 carbon & 2 oxygen atoms 0 carbon & 2 oxygen atoms CH4 0% 0% 0% 0% 1. 2. 3. 4. 4 carbon & 4 hydrogen atoms 1 carbon & 4 hydrogen atoms 4 carbon & 1 hydrogen atoms 2 carbon & 4 hydrogen atoms Mixtures Mixtures contain more than one substance (not chemically combined). Mixtures retain some of the properties of their individual substances, but can vary because the composition of a mixture is not fixed. In a heterogeneous mixture, the parts are noticeably different. In a homogenous mixture (or solution), the parts are so thoroughly mixed that it is hard to see the separate substances. It appears to be one substance Compound or Mixture? A compound is made up of more than one element chemically combined. A mixture contains more than one substance physically mixed together. Raisin Bran cereal is what type of mixture? 0% 0% 1. Homogeneous mixture 2. Heterogeneous mixture Pepperoni pizza is what type of mixture? 0% 0% 1. Homogeneous mixture 2. Heterogeneous mixture Salt water is what type of mixture? 0% 0% 1. Homogeneous mixture 2. Heterogeneous mixture Kool-aid is what type of mixture? 0% 0% 1. Homogeneous mixture 2. Heterogeneous mixture Classifying Matter Summary http://www.youtube.com/watch?v=WB0Kr8VA-74 Classifying Matter Return your remote COMPLETE p.13-14 “Classifying Matter” Entrance questions Ready your remotes Which type of substance contains only one type of atom? 0% 0% 0% 0% 1. Compound 2.Element 3.Mixture 4.Solution Which type of substance contains more than one type of atom but only one type of molecule? 0% 0% 0% 0% 1. Compound 2.Element 3.Mixture 4.Solution Practice questions 1.) Observe the chemical formulas for each of the following compounds. 2.) Identify the correct number of atoms of each element. Al2O3 0% 0% 0% 0% 1. 1 aluminum & 2 iodine & 3 oxygen atoms 2. 2 aluminum & 3 oxygen 3. 3 aluminum & 2 oxygen 4.2 aluminum & 5 oxygen FeO3 0% 0% 0% 0% 1. 3 iron & 3 oxygen 2. 1 iron & 3 oxygen 3. 1 iron & 1 oxygen 4. 0 iron & 3 oxygen Al(NO3)3 0% 0% 0% 0% 1. 3 aluminum & 3 nitrogen & 9 oxygen 2. 1 aluminum & 3 nitrogen & 9 oxygen 3. 3 aluminum & 1 nitrogen & 3 oxygen 4. 1 aluminum & 1 nitrogen & 9 oxygen 2 Ca2O 0% 0% 0% 0% 1. 2 calcium & 2 oxygen 2. 4 calcium & 2 oxygen 3. 4 calcium & 4 oxygen 4. 2 calcium & 4 oxygen 3 Ca3(PO4)2 0% 0% 0% 0% 1. 3 calcium & 1 phosphorus & 8 oxygen 2. 3 calcium & 3 phosphorus & 12 oxygen 3. 9 calcium & 3 phosphorus & 8 oxygen 4. 9 calcium & 6 phosphorus & 24 oxygen Properties of Matter NOTES © 2008 by Tim F. Rowbotham Properties of Matter Properties are the characteristics, traits, or behaviors that we can use to identify samples of matter and distinguish them from one another. Water, for example, has different properties than aluminum. Two TYPES of Properties Physical properties can be changed without changing the composition of the material itself. Chemical properties, if changed, would result in the formation of a new substance. Physical Properties & Changes A physical change is any change in a material that does not change the material into a new substance. Examples: Folding paper, Ripping paper, Adding salt to water, Breaking an egg Physical Properties Physical properties are any characteristics that could change without forming a new substance. Size, shape, color, taste, odor, magnetism, and temperature are all physical properties. Chemical Properties & Changes A chemical change is any change in a material that changes the material into a new substance. Examples: Burning paper, Cooking an egg, Fireworks exploding, Iron rusting Chemical Properties Chemical properties are characteristics that can be observed when a material changes into a new substance. Chemical changes are often accompanied by the release or absorption of energy in the form of heat, light, or sound. Physical or Chemical Change? A physical change DOES NOT form a new substance. A chemical change DOES form at least one new substance. Learning Checks Ready your remotes A change resulting in a new substance is called a 0% 0% 0% 0% 1.Physical change 2.Chemical change 3.Nuclear change 4.Mixture A change resulting in no new substance at all is called a 0% 0% 0% 0% 1.Physical change 2.Chemical change 3.Nuclear change 4.Mixture Creating a mixture would involve what type of change? 0% 0% 0% 0% 1.Physical change 2.Chemical change 3.Nuclear change 4.Mixture Creating a compound would involve what type of change? 0% 0% 0% 0% 1.Physical change 2.Chemical change 3.Nuclear change 4.Mixture Classifying Matter PACKET p.13 - 14 © 2008 by Tim F. Rowbotham Properties of Matter Return your remote Complete PROPERTIES PACKET p.15-16 “Mixtures & Compounds” Review questions Ready your remotes 3 SiO2 0% 0% 0% 0% 1. 3 silicon & 6 oxygen 2. 6 silicon & 12 oxygen 3. 3 silicon & 2 oxygen 4. 3 silver 1 iron & 2 oxygen A change resulting in a new substance is called a 0% 0% 0% 0% 1.Physical change 2.Chemical change 3.Nuclear change 4.Mixture Videos Physical & Chemical Change Song Physical Changes Song Creating a mixture would involve what type of change? 0% 0% 0% 0% 1.Physical change 2.Chemical change 3.Nuclear change 4.Mixture 2 Al(OH)3 0% 0% 0% 0% 1. 2 aluminum & 6 oxygen & 3 hydrogen 2. 2 aluminum & 2 oxygen & 3 hydrogen 3. 2 aluminum & 6 oxygen & 6 hydrogen 4. 2 aluminum & 3 oxygen & 3 hydrogen Physical or Chemical Change? JOURNAL # 1 Demonstration Record in your journal EVERY physical & chemical change you see!!! Review questions Return your remotes Make sure you have pages 15 – 16 done. Videos Hindenburg 1 Hindenburg 2 Properties PROPERTIES SONG Entrance Questions Ready your Remote Creating a mixture would involve what type of change? 0% 0% 0% 0% 1.Physical change 2.Chemical change 3.Nuclear change 4.Atomic change 2 Li2O 0% 0% 0% 0% 1. 1 lithium & 2 oxygen 2. 2 lithium & 1 oxygen 3. 4 lithium & 2 oxygen 4. 4 lithium & 4 oxygen Properties PAGE 3 Physical Properties Mass is the amount of matter that makes up an object. Volume is the amount of space an object takes up Weight is the force of gravity on an object. MASS video clip 1 MASS v. WEIGHT video clip 1 , 2 , 3 , 4 VOLUME video clip 1 , 2 , 3 Physical Properties Density is the amount of matter packed into a given volume Melting point is the temperature at which a substance changes from solid to liquid. Boiling point is the temperature at which a substance changes from liquid to gas. Density Clip 1 , 2 , 3 Distillation Videos 1 , 2 , 3 Physical Properties State (or phase) of matter describes whether a substance is a solid, liquid, gas, or plasma. Luster is how well a substance reflects light. Texture is how rough or smooth a substance is. Physical Properties Electrical conductivity is how easily a substance allows electricity to flow through it. Thermal conductivity is how easily a substance allows heat to flow through it. Physical Properties Malleability is the ability of a substance to be hammered without shattering Ductility is the ability of a substance to be stretched into a wire. Malleability video clip 1 Ductility video clip 1 This property is a measurement of how well a material allows heat to move through it. 0% 0% 0% 0% 1.Ductility 2.Tenacity 3.Electrical Conductivity 4.Thermal Conductivity Physical Properties Hardness is a measure of a substance’s resistance to scratching Tenacity is a substance’s strength against being pulled apart. Elasticity is the ability of a substance to return to its original shape after being stretched. Tensile strength (tenacity) test video clip 1 , 2 , 3 Elasticity video clip 1 , 2 Physical Properties Porosity is the ability of a solid to allow fluids to pass through it. Solubility is the ability of a substance to dissolve in another substance. Viscosity is the tendency of a liquid to resist flowing. Porosity video clip 1 , 2 , 3 Solubility video clip 1 , 2 Viscosity video clip 1 , 2 , 3, 4 This property describes a fluids tendency to resist flowing. It is often described as its “stickiness” or “thickness.” 0% 0% 0% 0% 1.Porosity 2.Density 3.Viscosity 4.Ductility List of Physical Properties Size, shape, color, taste, odor, magnetism, temperature, mass, volume, weight, density, melting point, boiling point, state or phase, luster, texture, electrical conductivity, thermal conductivity, malleability, ductility, hardness, tenacity, elasticity, porosity, solubility, viscosity VIDEO Practice Matter: Form & Substance in the Universe (Look for Properties) Physical & Chemical Properties & Changes WS Properties Notes Ready your remote Which of the following properties describes a substances ability to be hammered into a new shape ? 0% 0% 0% 0% 1.Malleability 2.Electrical conductivity 3.Flammability 4.Mass List of Physical Properties Size, shape, color, taste, odor, magnetism, temperature, mass, volume, weight, density, melting point, boiling point, state or phase, luster, texture, electrical conductivity, thermal conductivity, malleability, ductility, hardness, tenacity, elasticity, porosity, solubility, viscosity JOURNAL #2 Pick any object in your house. Do not share it with anyone. Describe it with at least 7 different physical properties (Be sure to be specific… i.e. blue color, high melting point, large volume, etc.) Properties Notes PAGE 3 Chemical Properties Reactivity is how well a substance combines chemically with other substances. VIDEO 1 , 2 , 3 , 4 Acidic substances behave like acids. VIDEO 1 , 2 , 3 Basic substances behave like bases. VIDEO 1 , 2 , 3 Chemical Properties Flammability is a material’s ability to burn when exposed to oxygen. VIDEO 1 , 2 Combustible materials tend to burn more rapidly in the presence of oxygen. VIDEO 1 , 2 Chemical Properties Corrosive substances “eat away” other substances VIDEO 1 , 2 Tarnishable substances may have their luster reduced by chemical reactions. VIDEO 1 , 2 Chemical Properties Explosive substances react violently when in contact with other substances. VIDEO 1 , 2 Photosynthetic substances are able to undergo photosynthesis. VIDEO 1, 2 Which of the following is a chemical property? 0% 0% 0% 0% 1.Malleability 2.Electrical conductivity 3.Flammability 4.Mass Properties Return your Remote Complete p.17 Knowing the Properties of Matter Entrance Questions Ready your Remote Which of the following is a chemical property? 0% 0% 0% 0% 1.Malleability 2.Electrical conductivity 3.Flammability 4.Mass Which of the following is a chemical change? 0% 0% 0% 0% 1.Melting ice 2.Mold forming on bread 3.Breaking glass 4.Dissolving salt in water Properties PAGE 4 More Focus on a PHYSICAL PROPERTY: Conductivity Conductivity describes a material’s ability to allow energy to be transferred through it. Conductors have high conductivity. Insulators have low conductivity. Electrical Conductivity An electrical conductor is a material that allows the easy flow of electricity through it. Copper, silver, gold, and most other metals are good electrical conductors. Electrical Conductivity An electrical insulator is a material that DOES NOT allow the easy flow of electricity through it. Rubber, plastic, wood, and many non-metals are electrical insulators. Thermal Conductivity A thermal conductor is a material that allows the easy flow of heat through it. Copper, silver, gold, and most other metals are also good thermal conductors. Thermal Conductivity An thermal insulator is a material that DOES NOT allow the easy flow of heat through it. (Thermal insulators hold the heat in.) Rubber, Styrofoam, insulation, air, and many non-metals are good thermal insulators. Learning Checks Ready your Remote Which of the following is an electrical insulator? 0% 0% 0% 0% 1.Aluminum 2.Water 3.Plastic 4.Copper Which of the following is a thermal conductor? 0% 0% 0% 0% 1.Thinsulate 2.Water 3.Plastic 4.Copper Which of the following is a thermal insulator? 0% 0% 0% 0% 1.Styrofoam 2.Iron 3.Water 4.Copper Conductivity Video Clip Notice the action of the atoms!!! (7:00 min – 10:00 min) ..\U2 - Properties of Matter\Conductivity.asf Learning check Ready your Remote A material that allows electricity to flow through it easily would be called a(n) 0% 0% 0% 0% 0% 1. Electrical Insulator 2. Thermal Insulator 3. Electrical Conductor 4. Thermal Conductor 5. Electrical Regulator A material that is an efficient blocker of heat would be called a(n) 0% 0% 0% 0% 0% 1. Electrical Insulator 2. Thermal Insulator 3. Electrical Conductor 4. Thermal Conductor 5. Electrical Regulator A material that is touching a hot plate & feels extremely hot would be an example of a(n) 0% 0% 0% 0% 0% 1. Electrical Insulator 2. Thermal Insulator 3. Electrical Conductor 4. Thermal Conductor 5. Electrical Regulator A material that is touching an ice cube & feels cold would be an example of a(n) 0% 0% 0% 0% 0% 1. Electrical Insulator 2. Thermal Insulator 3. Electrical Conductor 4. Thermal Conductor 5. Electrical Regulator A material that is touching an ice cube & does not feel cold would be an example of a(n) 0% 0% 0% 0% 0% 1. Electrical Insulator 2. Thermal Insulator 3. Electrical Conductor 4. Thermal Conductor 5. Electrical Regulator Conductivity Mini-lab Create a table with 6 columns 1.) Electrical conductor 2.) Thermal conductor JOURNAL # 3 Conductivity Mini-lab MATERIAL Electrical Conductor? Thermal Conductor? MATERIAL Iron (Steel) Oak Aluminum Poplar Copper PVC Brass Acrylic Pine Nylon Electrical Conductor? Thermal Conductor? Conductivity Mini-lab Answers Conductivity Mini-lab MATERIAL Electrical Conductor? Thermal Conductor? Iron yes yes Aluminum yes yes Copper yes yes Brass yes yes Pine no no Oak no no Poplar no no PVC no no Acrylic no no Nylon no no List of Physical Properties Size, shape, color, taste, odor, magnetism, temperature, mass, volume, weight, density, melting point, boiling point, state or phase, luster, texture, electrical conductivity, thermal conductivity, malleability, ductility, hardness, tenacity, elasticity, porosity, solubility, viscosity JOURNAL #4 Describe the balloon with at least 10 different properties (BOTH PHYSICAL & CHEMICAL) (Be sure to be specific… i.e. blue color, high melting point, large volume, etc.) Entrance Questions Ready your Remote This property describes a fluids tendency to resist flowing. It is often described as its “stickiness” or “thickness.” 0% 0% 0% 0% 1.Porosity 2.Density 3.Viscosity 4.Ductility This property is a measurement of how well a material allows heat to move through it. 0% 0% 0% 0% 1.Ductility 2.Tenacity 3.Electrical Conductivity 4.Thermal Conductivity This property is a measurement of the amount of matter that makes up an object. 0% 0% 0% 0% 1.Volume 2.Mass 3.Temperature 4.Ductility This property is a measurement of the amount of space that an object takes up. 0% 0% 0% 0% 1.Volume 2.Mass 3.Temperature 4.Ductility Notes P. 4 Density Physical Property: Density Density is a ratio of an object’s mass to its volume. Density = Mass D=m Volume V Density is basically a measure of how crowded a material’s atoms are. Density is very useful!! Every pure substance has its own unique, exact density. This density can be used to determine its identity or its purity. For example, all samples of pure gold have densities of 19.3 g/mL. Calculating Density 1.) Mass = 400 g Volume = 40 mL Density = Mass / Volume Density = 400g / 40mL Density = 10 g/mL Density 2.) Mass = 400 g Volume = 20 mL D = m/V D = 400 g / 20 mL D = 20 g/mL Density 3.) Mass = 800 g Volume = 20 mL D = m/V D = 800 g / 20 mL D = 40 g/mL Calculating Mass 4.) Mass = V x D Volume = 40 mL Density = 5 g/mL m = 40mL x 5 g/mL m = 200 g Calculating Volume 5.) Volume = m / D Mass = 100 g Density = 5 g/mL V = 100g / (5 g/mL) V = 20 mL Learning Check Ready your Remote If an object has a mass of 500g & a volume of100mL, what is its density? 0% 0% 0% 0% 1.) 2.) 3.) 4.) 50,000 g/mL 500 g/mL 50 g/mL 5 g/mL If an object has a mass of 50g & a volume of100mL, what is its density? 0% 0% 0% 0% 1.) 2.) 3.) 4.) 0.5 g/mL 2 g/mL 20 g/mL 5,000 g/mL If an object has a mass of 120g & a volume of 40mL, what is its density? 0% 0% 0% 0% 1.) 2.) 3.) 4.) 48,000 g/mL 160 g/mL 3 g/mL 0.33 g/mL Nice Work!!! INDEPENDENT SEATWORK: Don’t forget your textbook & calculator tomorrow!!!! Properties Quiz Ready your remotes Nice Work!!! You may return your remotes now Pick up a “Density Cube Set” paper Pick up a “Chapter 2 Reading Organizer” paper Homework/Classwork is page 21. Density Cube Set Lab 1.) Find the mass of each cube 2.) Find the volume of each cube (1 cm3 = 1 mL) 3.) Calculate density D=m/V Density Cube Set Lab Material Copper Brass Steel Aluminum Acrylic Oak Nylon Pine Poplar PVC PP Ironwood MASS VOLUME Calculate d Density Actual Density Sink or Float? Entrance Questions Ready your Remote If an object has a mass of 200g & a volume of 20mL, what is its density? (D = m/V) 0% 0% 0% 0% 1.) 2.) 3.) 4.) 10 g/mL 20 g/mL 200 g/mL 4,000 g/mL If an object has a mass of 600g & a volume of 20mL, what is its density? (D = m/V) 0% 0% 0% 0% 1.) 2.) 3.) 4.) 3 g/mL 20 g/mL 30 g/mL 12,000 g/mL Density Cube Set Lab 1.) Take out your worksheet 2.) Record the actual density in the final column 3.) See how close you got to the correct answers Density Cube Set Lab Material Copper Brass Steel Aluminum Acrylic Oak Nylon Pine Poplar PVC PP Ironwood MASS VOLUME Calculate d Density Actual Density Sink or Float? Density Cube Set Lab Material Actual Density Copper 8.9 g/mL Brass 8.0 g/mL Steel 7.6 g/mL Aluminum 2.7 g/mL Acrylic 1.2 g/mL Oak 0.7 g/mL Nylon 1.1 g/mL Pine 0.4 g/mL Poplar 0.4 g/mL PVC 1.4 g/mL Polypropylene 0.9 g/mL Ironwood 1.3 g/mL Density Cube Set Lab Material Actual Density Copper 8.9 g/mL Brass 8.0 g/mL Steel 7.6 g/mL Aluminum 2.7 g/mL Acrylic 1.2 g/mL Oak 0.7 g/mL Nylon 1.1 g/mL Pine 0.4 g/mL Poplar 0.4 g/mL PVC 1.4 g/mL Polypropylene 0.9 g/mL Ironwood 1.3 g/mL Sink or Float? Density of Water = 1.0 g/mL Material Actual Density Sink or Float? Copper 8.9 g/mL SINK Brass 8.0 g/mL SINK Steel 7.6 g/mL SINK Aluminum 2.7 g/mL SINK Acrylic 1.2 g/mL SINK Oak 0.7 g/mL FLOAT Nylon 1.1 g/mL SINK Pine 0.4 g/mL FLOAT Poplar 0.4 g/mL FLOAT PVC 1.4 g/mL SINK Polypropylene 0.9 g/mL FLOAT Ironwood 1.3 g/mL SINK Notes Turn to page 6 IDENTIFICATION BY DENSITY!! Density Table Substance Water Sulfur Titanium Silver Density 1.0 g/mL 2.1 g/mL 4.4 g/mL 10.5 g/mL Identification by Density A substance has a mass of 105 grams and a volume of 50 milliliters. What is this substance? D = m/V = 105 g / 50mL D = 2.1 g/mL SULFUR Identification by Density A substance has a mass of 315 grams and a volume of 30 milliliters. What is this substance? D = m/V = 315 g / 30mL D = 10.5 g/mL SILVER Identification by Density A substance has a mass of 500 grams and a volume of 500 milliliters. What is this substance? D = m/V = 500 g / 500 mL D = 1.0 g/mL WATER Calculating Volume A sample of sulfur has a mass of 1260 grams. Calculate its volume. V = m/D = 1260 g / 2.1 g/mL V = 600 mL Calculating Mass A sample of titanium has a volume of 500mL. What is its mass? m = V x D = 500mL x 4.4 g/mL m = 2200 grams Which of the following pure substances could have a mass of 220g & a volume of 50mL? (D = m/V) 0% 1.) water 0% 2.) sulfur 0% 3.) titanium 0% 4.) silver Which of the following pure substances could have a mass of 157.5g & a volume of 75mL? (D = m/V) 0% 1.) water 0% 2.) sulfur 0% 3.) titanium 0% 4.) silver Which of the following pure substances could have a mass of 330g & a volume of 75mL? (D = m/V) 0% 1.) water 0% 2.) sulfur 0% 3.) titanium 0% 4.) silver Density Problems Turn in remotes Turn in Density Cube Set WS Properties Packet p. 22 Chapter 2 Reading Organizer Entrance Questions Ready your Remote The measurement of the amount of matter packed into a certain amount of space is 25% 25% 25% 25% 1. volume 2. melting point 3. weight 4. density Which of the following is NOT a property of stainless steel (like that used in “silverware”) ? 1. High tarnishability 2. High melting point 3. High hardness 4. Silver color Properties of Matter COMPLETE CHAPTER 2 READING ORGANIZER!!! Identification by Density 1.)Find Mass of Substance & Container using balance 2.)Subtract mass of container to find mass of substance only 3.)Determine Density of Substance (D=m/V) 4.)Identify Substance based on its density Properties of Matter JOURNAL#5 Why does diet coke float & coke sink? Properties of Matter TURN TO PAGE 23 of your Properties Packet What determines if an object will sink or float in a fluid? Density Cube Set Lab Material Actual Density Sink or Float? Copper 8.9 g/mL SINK Brass 8.0 g/mL SINK Steel 7.6 g/mL SINK Aluminum 2.7 g/mL SINK Acrylic 1.2 g/mL SINK Oak 0.7 g/mL FLOAT Nylon 1.1 g/mL SINK Pine 0.4 g/mL FLOAT Poplar 0.4 g/mL FLOAT PVC 1.4 g/mL SINK Polypropylene 0.9 g/mL FLOAT Ironwood 1.3 g/mL SINK Density & Floating If a substance is MORE DENSE than the fluid, it will SINK. Dsubstance > Dfluid SINK If a substance is LESS DENSE than the fluid, it will FLOAT. Dsubstance < Dfluid FLOAT Density of Water = 1.0 g/mL Material Actual Density Sink or Float? Copper 8.9 g/mL SINK Brass 8.0 g/mL SINK Steel 7.6 g/mL SINK Aluminum 2.7 g/mL SINK Acrylic 1.2 g/mL SINK Oak 0.7 g/mL FLOAT Nylon 1.1 g/mL SINK Pine 0.4 g/mL FLOAT Poplar 0.4 g/mL FLOAT PVC 1.4 g/mL SINK Polypropylene 0.9 g/mL FLOAT Ironwood 1.3 g/mL SINK 1.) Chicken noodle soup is an example of a(n) 0% 0% 0% 0% 1. Element 2.Compound 3.Homogeneous mixture 4.Heterogeneous mixture 2.) A diamond allows heat to flow through it really well, so it is a(n) 0% 0% 0% 0% 1. Electrical conductor 2.Electrical insulator 3.Thermal conductor 4.Thermal insulator 3.) A substance composed of more than one type of atom, but only one type of molecule is called a(n) 0% 0% 0% 0% 1. Element 2.Compound 3.Homogeneous mixture 4.Heterogeneous mixture 4.) What would be the mass of an object with a density of 4.4g/mL and a volume of 100mL? (m = V x D) 0% 0% 0% 0% 1. 440 g 2. 22.7 g 3. 440 mL 4. 0.044 g 5.) Would polypropylene (D = 0.9 g/mL) float on water (D = 1.0 g/mL)? 0% 0% 0% 1. Yes, it would float 2.No, it would sink to the bottom 3.It would sink half way to the bottom 6.) Which of the following is a chemical property? 0% 0% 0% 0% 1. Boiling point 2.Luster 3.Corrosive 4.Solubility 7.) The measurement of how much mass is contained in a given volume is called 0% 0% 0% 0% 1. Weight 2.Melting point 3.Solubility 4.Density 8.) Aluminum has a density of 2.7g/mL. If a material has a mass of 300g and a volume of 100mL, can it be pure aluminum? 0% 0% 0% 0% 1. Yes 2.No 3.Maybe – it depends on its weight 4.Maybe – it depends on its temperature Which of the following is NOT a property of gold? 0% 0% 0% 0% 1. High malleability 2. High melting point 3. Low hardness 4. High reactivity JOURNAL # 6 Using your scientific knowledge, try to explain in detail how the Cartesian diver works. States of Matter Notes Created in 2006/2010 by Tim F. Rowbotham Important Definitions Matter – anything that has mass and volume Energy – ability to do work or cause change Kinetic Energy – the energy an object has due to its motion State of Matter Materials are classified in different states (or phases) of matter based on composition and temperature. There are currently 5 accepted states of matter: solid, liquid, gas, plasma, and BoseEinstein condensates. Kinetic Theory The kinetic theory states that all matter is made of tiny particles that are in constant motion. It explains the characteristics (or properties) of matter in terms of the energy of these particles Kinetic Theory & Solids The atoms in a solid are held close together by strong forces of attraction The atoms have very low kinetic energy The atoms seem to vibrate, but do not move around Solids Solids have a definite shape Solids have a definite volume Learning Checks READY YOUR REMOTE “All matter is made out of tiny particles that are in constant motion.” This is called 0% 0% 0% 0% 1. 2. 3. 4. Newton’s Law Particle theory The theory of relativity The kinetic theory Atoms in a solid are 0% 0% 0% 1. Close to one another 2. Far away from other atoms 3. Always the same distance apart Atoms in a solid move 0% 0% 0% 1. A lot 2. Very little 3. According to the theory of relativity Crystalline Solids Atoms are arranged in repeating geometric patterns Considered “true” solids & tend to hold their shape Examples: salt, ice, diamonds, sugar, aluminum, graphite Draw atoms of a Crystalline Solid Draw atoms of a Crystalline Solid Amorphous Solids Atoms have no repeating pattern Amorphous means “without form” Same properties as crystalline solids, but have no distinct melting point Examples: glass, wax, plastic, styrofoam, coal, rubber Draw atoms of an Amorphous Solid Entrance Questions READY YOUR REMOTE A crystalline solid has atoms that 0% 0% 0% 0% 2. 1. Move a lot Are arranged in a repeating pattern 3. Are randomly arranged 4. Do not move “All matter is made out of tiny particles that are in constant motion.” This is called 0% 0% 0% 0% 1. 2. 3. 4. Newton’s Law Particle theory The kinetic theory The theory of relativity Draw atoms of an Amorphous Solid Examples of Crystalline & Amorphous Solids Examples of Crystalline & Amorphous Solids Examples of Crystalline Solids Carbon nanotube Examples of Crystalline Solids Table Salt Examples of Crystalline Solids Examples of Crystalline Solids Examples of Crystalline Solids Learning Checks READY YOUR REMOTE An amorphous solid has 25% 25% 25% 25% 1. 2. 3. 4. Atoms that move a lot atoms arranged in a repeating pattern atoms that are randomly arranged atoms that do not move Kinetic Theory & Liquids The forces of attraction between atoms in a liquid are not strong enough to hold them together Atoms in a liquid are close, but have enough kinetic energy to roll over and around each other Liquids Because its atoms move over and around each other, a liquid has the ability to flow. Liquids do not have definite shape; liquids take the shape of their container Liquids have a definite volume. Draw Atoms in a Liquid Liquids Liquids Kinetic Theory & Gases Atoms in a gas have high enough kinetic energy that they are not held by the attractive forces of other atoms Atoms in a gas may be spread far apart and may collide with each other with great force Gases Because atoms in a gas move around a lot, gases have no definite shape or volume Gases take the shape of their container but also can be compressed Draw Atoms in a Gas Learning Checks READY YOUR REMOTE “All matter is made out of tiny particles that are in constant motion.” This is called 0% 0% 0% 0% 1. 2. 3. 4. Newton’s Law Particle theory The kinetic theory The theory of relativity Which of the following has atoms that are still close together but have enough energy to roll over and around each other? 0% 1. Solid 2. Liquid 0% 3. Gases 0% 4. Plasma 0% Which of the following has atoms that are far apart and move rapidly? 0% 0% 0% 0% 1. 2. 3. 4. Solids Liquids Gases Bose-Einstein condensates Which of the following has atoms that are close together and vibrate in place? 0% 0% 0% 0% 1. 2. 3. 4. Solid Liquid Gases Plasma States of Matter States of Matter Video Clip States of Matter Song Kinetic Theory & Plasmas Atoms in a plasma have extremely high kinetic energy Atoms in a plasma collide with such great force that the electrons are knocked out of the atoms Plasmas Plasmas have the same properties as gases, except that they are electrically charged Plasma makes up 90% of the matter in the universe Plasma is found in stars, neon & fluorescent lights, & lightning Plasmas Plasma the Fourth State Plasma video clip 1 Plasma video clip 2 Plasma video clip 3 Bose-Einstein Condensates Scientists in 1995 decided to classify matter into a fifth state Bose-Einstein Condensates. This state of matter only exists at very low temperatures (near absolute zero). Bose-Einstein Condensates BEC Video clip 1 BEC Video clip 2 States of Matter State Shape Volume Particle Spacing Particle Motion Kinetic Energy Solid Liquid Gas Plasma States of Matter State Solid Liquid Gas Plasma Shape Definite Varies Varies Varies Volume Definite Definite Varies Varies Particle Packed Close Spread out Spacing tight Particle Vibrate Roll over Bounce off Motion in place each other each other Kinetic Very low Low High Energy Spread out Violent collisions Very high States of Matter Return your Remotes Complete page 26 – 28 of your Packet p.26 Venn Diagram p.27-28 Solids, Liquids, & Gases Learning Checks READY YOUR REMOTE “All matter is made out of tiny particles that are in constant motion.” This is called 0% 0% 0% 0% 1. 2. 3. 4. Newton’s Law Particle theory The kinetic theory The theory of relativity How is a plasma different from a gas? 0% 0% 0% 0% 1. 2. 3. 4. Plasma atoms are moving slower A plasma has free electrons Atoms of a plasma are larger Atoms of a plasma are smaller Properties of Matter Notes Turn to page 10 Bose-Einstein Condensates Scientists in 1995 decided to classify matter into a fifth state Bose-Einstein Condensates. This state of matter only exists at very low temperatures (near absolute zero). Bose-Einstein Condensates BEC Video clip 1 BEC Video clip 2 An amorphous solid has atoms that 0% 0% 0% 0% 1. 2. 3. 4. Move a lot Are arranged in a repeating pattern Are randomly arranged Do not move A substance at a higher temperature means that 0% 0% 0% 0% 1. 2. 3. 4. Its atoms are moving faster Its atoms are moving slower Its atoms are larger Its atoms are smaller A substance contracts at a lower temperature because 0% 0% 0% 0% 1. 2. 3. 4. Its atoms are moving faster Its atoms are moving slower Its atoms are larger Its atoms are smaller Temperature Scales Fahrenheit oF Celsius oC Kelvin K Temperature Scales Temperature Scales Temperature Measuring Temperature - Eureka Temperature Scales video clip Eureka - Temperature vs. Heat Learning Checks Ready your remote What temperature scale begins at the freezing point of water? 0% 0% 0% 0% 1. 2. 3. 4. Fahrenheit Celsius Kelvin Newton’s What do scientists think would happen at the theoretical temperature of absolute zero? 0% 0% 0% 0% 1. 2. 3. 4. Atoms stop moving Nuclear fusion Atoms explode Atoms change into antimatter Entrance Video Molecules in Motion Changes in State If the atoms that make up a substance gain enough kinetic energy, they can overcome the forces of attraction and change to a new state. This usually occurs at a specific temperature. Changes in State If the atoms that make up a substance lose enough kinetic energy, they will be attracted to other atoms and change state. This also usually occurs at a specific temperature. Names for State Changes Melting – change from a solid to a liquid; occurs at a substance’s melting point (m.p.) Freezing – change from liquid to a solid; occurs at a substance’s freezing point (f.p.) (Melting Point = Freezing Point) Names for State Changes Condensation – change from a gas to a liquid Vaporization – all types of changes from liquid to a gas Types of Vaporization Boiling – a change from liquid to gas due to heating Occurs at the boiling point Evaporation – a change from liquid to gas due to escape of surface atoms of a liquid Occurs at any temperature (that it remains a liquid) Names for State Changes Sublimation – change from a solid straight to a gas Deposition – change from a gas to a solid without first becoming a liquid Phase Changes Video Clips Sublimation of Iodine Change in State Phase Changes Bangalore Iron Pour JOURNAL #7 USE THE KINETIC THEORY to explain what happens to the T1000. Terminator 2 Video Clip Exit Questions Ready your remote A change in state from gas to liquid is called 0% 0% 0% 0% 1. 2. 3. 4. Melting Freezing Vaporizing Condensing A change in state from liquid to gas that only occurs at the surface of a liquid is called 1. 2. 3. 0% 0% 0% 0% 4. Melting Freezing Boiling Evaporation Classwork Assignments RETURN REMOTES Turn to page 29 “Changes in State” Complete p. 30-31 “Thermal Energy & Changes in State” JOURNAL #8 USE THE KINETIC THEORY to explain what happens to the popcorn & balloon. Entrance Questions Ready your remote A substance contracts at a lower temperature because 0% 0% 0% 0% 1. 2. 3. 4. Its atoms are moving faster Its atoms are moving slower Its atoms are larger Its atoms are smaller A change in state from liquid to solid is called 0% 0% 0% 0% 1. 2. 3. 4. Melting Freezing Vaporizing Condensing A change in state from gas to solid is called 0% 0% 0% 0% 1. 2. 3. 4. Sublimation Deposition Vaporization Condensation Tables - Solid, Liquid, or Gas? A substance remains a solid until its temperature reaches its m.p. WATER’s m.p. = 0°C Below 0°C WATER is a SOLID Tables - Solid, Liquid, or Gas? A substance is a liquid so long as its temperature is between its m.p. and its b.p. WATER’s m.p. = 0°C Above 0°C WATER has melted and become liquid Tables - Solid, Liquid, or Gas? A substance will be a gas as long as its temperature is above its b.p. WATER’s b.p. = 100°C Above 100°C WATER has boiled and become a gas Classwork Assignments RETURN REMOTES Turn to page 32 “States of Matter” Complete p. 33 “Substances & Their States” Complete p.34 “Reading a Table of Properties” The Properties packet should now be completed & include 8 journals!!