unit exam Tuesday Nov 17

UNIT TEST TUESDAY!!! 40 POINTS!!!!

Approximately:

36 questions - 40 points

1) Classify matter correctly using the following terms: pure substance, element, compound, mixture, homogeneous mixture, heterogeneous mixture, solution, solute, solvent, suspension, colloid, metal, nonmetal

Approx. 12 questions

2) Differentiate between physical changes, chemical changes, physical properties and chemical properties.

Approx. 3 questions

3) Differentiate between exothermic and endothermic changes: Approx. 3 questions

4) Particle models of Matter Approx. 3 questions

5) Make observations of physical and chemical properties of known substances in order to identify unknown samples - 1 question

6) Identify the dependent variable and independent variable on a graph. – 1 question

7) Interpret a developed chromatogram and calculate Rf values on the resulting component parts of a mixture. Approx. 3 questions

8) Describe methods of separation: Approx. 5 questions

9) Interpret data from a heating curve. Interpret melting point or boiling point data to determine if a sample is a pure substance or a mixture Approx. 10 questions.