Chemistry Mid-Term 2016 Welcome to Jeopardy! With your hosts…. Mrs. Einstein, Mr. Naturale & Mr. Del Guercio! The smallest part of an element is an ______. And it is made up of ______, ________ and ______. The nucleus of an atom consists of _____ and _____. Neutrons have a _______ charge, and protons have a ________ charge. Which is NOT a unit for measuring DENSITY? a) g/ml b) kg/ml c) g/cm d) g/L Percentage error tells you… a) b) c) d) e) Mass Density Accuracy Precision Accepted Value So when 2 measurements are close to each other they are… a) b) c) d) e) Accurate Accurate and Precise Precise Precise and Accepted value Accepted value Which Unit is GREATER? 1 b) 1 c) 1 d) 1 a) nanogram centigram milligram microgram Which is a derived unit? a) Length b) Mass c) Density d) Volume e) None of these The unit mL is used to express a) b) c) d) e) Length Mass Density Volume Meters The BEST unit for mass is ______. While the BEST unit for amount is _______. a) kilogram and kelvin b) gram and centimeter c) centimeter and mol d) meter and mol e) gram and mol f) kilogram and centimeter g) milliliter and mol Using the METRIC conversion table, convert 0.014 L to: mL________ kL________ uL________ Convert the following…… 1) 20 cm = ______________ m 2) 0.032 L = _____________ mL 3) 45 m = ______________ nm 4) 805 dm = ______________ km Are these Qualitative or Quantitative? ________The chemical reaction yielded 3.22 moles of product. _____The salt aided in the dissolving of the solid. ______The solution is 0.102 M NaCl. How do you get a DERIVED unit? Convert the below using scientific notation: 124 = _______ 93000.00 = _________ 0.00000000043 = ________ Find the mass of 250.0 mL of benzene. The density of benzene is 0.8765 g/mL. So a block of LEAD has dimensions of 4.50 cm by 5.20 cm by 6.00 cm. The BLOCK literally has a mass of 1587g….SO what’s the density of the LEAD? So a student in Chemistry is completing a measuring lab. She found the measurement to be 3.40cm. The correct value is 3.36 cm. Calculate the percentage error? Dimensional Analysis: HOW many seconds are there in 782 minutes? _________ Name the three (3) States of matter (you know anything that has mass and takes up space)we have discussed to date? Identify the below as Extensive or Intensive… boiling point Volume Mass Density Conductivity ________ ________ ________ ________ ________ Identify the below as Physical or Chemical properties: Melting point: Flammable: Density: Magnetic: Tarnishes in air: Physical or Chemical change? change in color or odor:______ formation of a gas:_______ formation of a precipitate:_____ change from liquid to solid:____ In the foul water lab, foul water was separated using three (3) separation techniques. Name and describe two of the techniques you used? First you______________ Then You______________ And then you____________ And Whaaalah!!!! Water clean enough to wash your hands. An Element is: A. composed of identical electrons B. composed of identical mixtures C. composed of identical atoms D. composed of identical heterogeneous mixtures A Compound is: composed of 2 or more homogeneous mixtures B. composed of 2 or more elements in a fixed ratio C. properties are the same from individual elements D. properties are the same from grouped compounds A. The following are compounds except: NaCl 2. H2O 3. Al 4. CO 5. H2SO4 1. Homogeneous Solutions : A. Not evenly distributed B. Have medium-sized particles C. Are evenly distributed D. Have particles that settle Heterogeneous mixtures…. A. Are not evenly distributed B. Have medium-sized particles C. Are evenly distributed D. Have particles that settle Colloid Mixtures are…… Homogeneous with large particles 2. Homogeneous with dissolved particles 3. Heterogeneous with large particles 4. Heterogeneous with medium particles 1. What step(s) have been completed of the water filtration lab? List all that apply. Color Pale yellow Solids Present Odor Fishy Oil and Floating Debris None A. Distillation B. Charcoal Filtration C. Oil Water Separation D.Sand Filtration Label the following as : Colloid/Suspension or Solution mayonnaise muddy water saltwater Italian salad dressing A Suspension Mixture is : 1. Homogeneous with dissolved particles 2. Heterogeneous with large particles 3. Homogeneous with large particles 4. Heterogeneous with dissolved particles Label the following as: element, heterogeneous mixture, compound or solution. graphite Salad dressing sugar (sucrose) Distillation - is to….. 1. 2. 3. 4. separate solids from liquids with a barrier (filter paper) separate liquids because of different boiling points use different substances to attract paper or gel, so as to move at different speeds none of the above The Periodic Table is organized by: A. Metals/Metalloids/AlkaMetals B. Nonmetals/Metalloids/AlkaMetals C. Metalloids/Nonmetals/Metals D. None of the above Blocks are organized by: A. Main Group Elements/Alkali Metals/Outer Transition Atoms B. Main Group Elements/Transition Metals/Inner Transition Metals C. Main Group Elements/Transition Metals/Outer Transition Metals D. Main Group Elements/Metalloids/Outer Transition Atoms Periods on the periodic table are defined as: Vertical rows of elements, aka groups B. Diagonal rows of elements,aka groups C. Horizontal rows on the periodic table D. Symmetrical rows on the periodic table A. Families on the periodic table are: A. Horizontal rows of elements, aka groups and each group contains similar chemical properties B. Vertical rows of elements, aka groups and each group contains similar chemical properties C. Symmetrical rows of elements, aka groups and each group contains similar chemical properties Most metals are malleable, which is MOST like.. A. They can be stretched out like a square piece of bubble gum, which will cover a football field B. They can be pounded into thin sheets,like a sugar cube sized chunk which will cover a football field C. They can be swirled around like lemonade and dissolved, which will cover a football field This group of elements are great conductors of heat and electricity: A Metalloids B Non-Metals C Metals D Alkaloids Metalloids: A. B. c. d. e. Elements that may share properties of metals and non-metals. Elements that may share properties of metals and compounds Are a stair-step line separates the metals from the nonmetals on the periodic table. A&C B&C The Branch of chemistry that involves the study of substances and processes occurring in living things is called? A. Organic Chem B. Bio Chem C. Atomic Chem D. Physical Chem E. Theoretical Chem Isotopes - are Atoms of the same element have same number of _____ BUT different number ________. a) b) c) d) e) f) Protons / Electrons Electrons / Neutrons Protons / Neutrons Neutrons / Protrons Electrons / Protons Neutrons / Electrons Ionic bonds form between… A. B. C. D. E. Two cations Two anions Atoms with neutral charges Ions with opposite charges Isotopes with opposite charges Name the following compounds NaCl Al2SO4