Unit 2 Test Review Due September 28Th, 2011

Name______Date______Period______

Unit 2 Test Review Due September 28th, 2011

Matter 1. Define or describe each of the following: a. Matter f. Compound g. Physical Change b. Homogeneous Mixture h. Chemical Change c. Heterogeneous Mixture i. Physical Property j. Chemical Property d. Alloy k. Intensive Property e. Element l. Extensive Property

2. Using your definition of Matter, classify the following as either Matter (M) or Not Matter (NM) a. Heat NM d. Air M g. Plasma M b. Light NM e. Sound NM h. Rock M c. Water Vapor M f. Energy NM i. Steam M

3. Fill in the chart below: Definite Shape? Definite Volume? Can be compressed? Kinetic Energy? (Yes/No) (Yes/No) (Yes/No) (High/Medium/Low) Solid Yes Yes No Low Liquid No Yes No Medium Gas No No Yes High Plasma No No Yes High

4. Identify the following as representing either a physical change (P) or a chemical change (C) a. Wood turns to ash when burned C d. Iron melts P b. Frying an egg C e. Alcohol evaporates on a countertop P c. Water freezes P f. Grains fermenting C 5. Identify the following properties as either PHYSICAL (P) or CHEMICAL (C) and EXTENSIVE (E) or INTENSIVE (I): P/C E/I P/C E/I m. A liquid has a volume of 50.2 ml P, E s. Salt solutions conduct electricity P, I n. Ethanol is flammable C t. Acids and bases are corrosive C, o. Copper has a density of 8.92 g/cm3 P, I u. Sugar is soluble in water P, I p. The iron sample has a mass of 26.4gP, E v. Silver reacts with nitric acid C q. Sodium has a silver color P, I w. Water evaporates to water vapor P, I r. Water has a boiling point of 100°C P, I x. Methane is combustible C y. Coke has a pH of about 3 C z. Glycerol is a viscous liquid P, I

Classification of Matter 6. Fill in and memorize the Flow Chart below describing how to classify matter. Include both the classification type, a short description of each, and one example for each of the four main classifications:

Matter Anything that has mass and volume

Mixture Pure Substance Physical mixture of 2 or Composed of a single more substances substance throughout

Heterogeneous Mixture Homogeneous Mixture Element Compound Looks different throughout Looks the same throughout On Periodic Table Chemical combo of 2 or Ex: Chex Mix Ex: Kool Aid Ex: Au, Fe more elements Ex: NaCl

7. Matching: C a. Homogeneous Mixture i. Matter composed of a simple substance that cannot be broken b. Compound D down any further c. Element ii. Matter composed of more than one substance that looks different d. Heterogeneous Mixture B throughout iii. Pure substance created chemically that has different properties than D the substances that form it iv. Matter composed of more than one substance that looks different C throughout. v. These are given symbols like ‘Ar’, ‘Zn’, ‘W’, and ‘Xe’ and are arranged in a table called the Periodic Table

8. Identify the following as either an ELEMENT (E), COMPOUND (C), HOMOGENEOUS MIXTURE (S) or HETEROGENEOUS MIXTURE (H) H H a. Vinegar and Oil g. Chex Mix C E b. Dry Ice (solid carbon dioxide (CO2)) h. Gold Bracelet (Au) S S c. Brass allow (Cu and Zn) i. Clear apply juice C C d. Table Salt (NaCl) j. Sugar (C12H22O11) C S e. Oxygen gas (O2) k. Sugar dissolved in water S f. Salt dissolved in water S l. Air 9. Separation Techniques: g. Define Filtration: Separation of a solid from a mixture and/or separation of 2 solids based on size

i. What is the main difference between the parts of the mixture that allow them to be separated by filtration? State of matter and/or size

h. Define Distillation: Separation of 2 or more liquids based on differences in their boiling point

ii. What is the main difference between the parts of the mixture that allow them to be separated by distillation? boiling point