TOPIC 1 CHEMISTRY: THE STUDY OF MATTER MRS. PAGE CHEM10 2015-2016 DAILY OBJECTIVES • DISTINGUISH BETWEEN THE PHYSICAL PROPERTIES AND CHEMICAL PROPERTIES OF MATTER. • EXPLAIN SOLID, LIQUID, AND GAS STATES IN TERMS OF KINETIC PARTICLE THEORY. • INTERPRET PHASE CHANGE DIAGRAMS • DISTINGUISH BETWEEN PURE SUBSTANCES, HETEROGENEOUS MIXTURE, AND HOMOGENEOUS MIXTURE, GIVING EXAMPLES OF EACH • LIST THE SI UNITS FOR LENGTH, MASS, TIME, VOLUME, DENSITY AND PRESSURE • DISTINGUISH BETWEEN MASS AND WEIGHT WHAT IS CHEMISTRY? • THE STUDY OF THE MATTER, ITS COMPOSITION, PROPERTIES, AND THE CHANGES IT UNDERGOES. WHAT IS MATTER? • MATTER IS ANYTHING THAT HAS VOLUME AND MASS. • VOLUME: THE AMOUNT OF SPACE AN OBJECT TAKES UP • VOLUME IS MEASURED IN LITERS (L) OR CUBIC CENTIMETERS (cm3) • MASS IS THE AMOUNT OF PARTICLES IN AN OBJECT • MASS IS MEASURED IN KILOGRAMS (kg) MASS VS WEIGHT • MASS • THE AMOUNT OF MATTER IN AN OBJECT • CONSTANT • SI UNIT KILOGRAMS (kg) • WEIGHT • THE FORCE OF GRAVITY ON AN OBJECT • CHANGES WITH LOCATION (EX: MOON VS EARTH) • SI UNIT NEWTONS https://www.youtube.com/watch?v=1whMAIGNq7E CLASSIFYING MATTER • PURE SUBSTANCE (ELEMENTS & COMPOUNDS)- MADE OF 1 TYPE OF PARTICLE. IT CAN’T BE SEPARATED IN A PHYSICAL WAY. • MIXTURE- MORE THAN ONE SUBSTANCE “MIXED” TOGETHER. IT CAN BE SEPARATED IN PHYSICAL WAYS (FILTERING, EVAPORATION, PICKING APART, USING A MAGNET, ETC.) • GIVE SOME EXAMPLES OF PURE SUBSTANCES AND MIXTURES FROM YOUR EVERY DAY LIFE. CLASSIFYING MATTER 2 TYPES OF MIXTURES: • HOMOGENEOUS MIXTURE- THE COMPONENTS THAT ARE MIXED ARE EVENLY DISTRIBUTED. THE SAME THROUGHOUT • HETEROGENEOUS MIXTURE- THE PARTS MAKING UP THE MIXTURE ARE NOT EVENLY DISTRIBUTED. NOT THE SAME THROUGHOUT • DRAW A PICTURE REPRESENTING A PURE SUBSTANCE, A HOMOGENEOUS MIXTURE & A HETEROGENEOUS MIXTURE. GIVE EXAMPLES OF EACH. BRAIN BREAK • HTTP://WWW.WATCHKNOWLEARN.ORG/VIDEO.ASPX?VIDEOID=541 81&CATEGORYID=17404 • HTTP://WWW.WATCHKNOWLEARN.ORG/VIDEO.ASPX?VIDEOID=541 82&CATEGORYID=17404 PROPERTIES OF MATTER • PHYSICAL PROPERTIES• A PROPERTY THAT CAN BE OBSERVED AND MEASURED WITHOUT CHANGING THE COMPOSITION. • CAN BE OBSERVED WITHOUT A CHEMICAL CHANGE OCCURRING • EXAMPLES? • COLOR, MELTING POINT, STATE OF MATTER, CONDUCTIVITY, HARDNESS, DENSITY, MAGNETISM PROPERTIES OF MATTER • CHEMICAL PROPERTIES• A PROPERTY THAT CAN ONLY BE OBSERVED BY REARRANGING THE ATOMS IN THE SUBSTANCE. • REQUIRES A CHEMICAL REACTION TO OBSERVE • EXAMPLES? • REACTIVITY, PH, FLAMMABILITY, OXIDATION (EX: RUSTING) STATES OF MATTER • SOLID- HAS DEFINITE SHAPE AND VOLUME. THE PARTICLES CANNOT MOVE PAST EACH OTHER. PARTICLES SHAKE IN PLACE BUT LOW ENERGY. • LIQUID- DEFINITE VOLUME BUT TAKES THE SHAPE OF ITS CONTAINER. THE PARTICLES SLIDE PAST EACH OTHER. PARTICLES HAVE MEDIUM ENERGY AND MOVE AROUND. • GAS- A SUBSTANCE WITHOUT DEFINITE VOLUME OR SHAPE, IT FILLS ITS’ CONTAINER. THE PARTICLES ARE VERY SPREAD OUT. PARTICLES HAVE HIGH ENERGY AND MOVE AROUND RAPIDLY https://www.youtube.com/watch?v=_rsqBNhFG1Y States of Matter Definite Definite Volume? Shape? Compressible? Solid YES YES NO Liquid YES NO NO Gas NO NO YES CHANGES OF STATES Condensation Freezing Melting Solid Evaporation Liquid Gas PHASE CHANGE DIAGRAMS INTERPRET TICKET OUT THE DOOR 1. Define matter 2. What is the difference between mass and weight? 3. What are the two properties of matter? Give an example of each. 4. Describe the 3 states of matter using the kinetic molecular theory. 5. How do you feel about the first week of chemistry?