Chemistry Chapter 2 – Composite of All Quiz Questions

 

Classifying Matter – Chapter 2 – Quiz Questions #1
pp. 43 - 50

 

 

1. Define the word MATTER.

2. Define the word ELEMENT and give an example.

3. Define the word ATOM and give an example.

4. Define the word MOLECULE and give an example.

5. Define the word COMPOUND and give an example.

6. Define the term CHEMICAL FORMULA and give an example.

7. Define the word MIXTURE and give an example.

8. State the chemical formulas for:
           a) Water
           b) Methane
           c) Carbon Dioxide
           d) Carbon Monoxide

9. What is a HOMOGENOUS MIXTURE?  Give an example.

10. What is a HETEROGENOUS MIXTURE? Give an example.

11. What is a PURE SUBSTANCE?  Give an example.

12. Describe a procedure to separate a mixture of salt, finely ground pepper, and pebbles.

13.You have been asked to prove whether a particular shiny ring is made out of gold or is a
      fake. How could you use the idea of density to make your decision?

 

 

Properties of Matter  – Chapter 2 – Quiz Questions #2
pp. 51 - 58

1. List 4 physical properties of objects or substances.
     a)                               b)                              c)                             d)

2. Why are color, volume, and density classified as physical properties?

3. Why are flammability and reactivity classified as chemical properties?

4. Define MELTING POINT and give the melting point of water.

5. Define BOILING POINT and give the boiling point of water.

6. Define DENSITY and explain why...
           a) a brick is more dense than a sponge.
           b) helium-filled balloons float up in the air.
           c) a stone sinks to the bottom of a pond.

7. Define REACTIVITY.

8. Identify the following as physical or chemical properties:
          a) reacts with oxygen to form rust
          b) is red
          c) is shiny and silvery
          d) melts easily
          e) boils at 100 degrees celsius
          f) is nonflammable
          g) has a low density
          h) tarnishes in moist air

9. A jar  contains 30mL of glycerin (mass = 37.8g) and 60mL of corn syrup (mass = 82.8 g).
       Which liquid is the top layer? Explain.

10. Calculating Density:
a) A piece of titanium metal has a mass of 67.5 g and a volume of 15 cubic centimeters. What is
        the density of titanium?


b) A sample of a substance that has a mass of 85g has a volume of 110 cubic centimeters. What
        is the density of the substance? Will the substance float in water?

 

 

Changes of Matter – Chapter 2 – Quiz Questions #3
pp. 59 - 69

1. Define the term PHYSICAL CHANGE and give three examples.

2. Define the term CHEMICAL CHANGE and give three examples.

3. Name a substance that is NOT flammable. Name a substance that is NOT reactive.

4. Explain why changes of state are physical changes.

5. Explain why physical changes can easily be reversed but chemical changes cannot.

6. List three clues that indicate a chemical change has occurred.
      a)                                              b)                                          c)

7. Classify each of the following as a chemical change or a physical change:
          a) sugar being added to lemonade
          b) plants using carbon dioxide and water to form oxygen and sugar
          c) water boiling
          d) an egg frying
          e) rust forming on metal
          f) fruit rotting
          g) salt being removed from water by evaporation

8. A light green powder is heated in a test tube. A gas is given off while the solid becomes black.
      What type of change is occurring?  Explain your reasoning.

9. Use this table to answer the questions (NOTE: circle “element” or “compound” + count atoms):

a) Ethanol                  C₂H₆O – element or compound? number of atoms? ______
b) Baking Soda          NaHCO₃            – element or compound? number of atoms? ______
c) Hydrogen               H₂                          – element or compound? number of atoms? ______
d) Oxygen                  O₂                          – element or compound? number of atoms? ______
e) Ozone                    O₃                          – element or compound? number of atoms? ______
f) Table Salt               NaCl               – element or compound? number of atoms? ______

g) Sulfur                     S                     – element or compound? number of atoms? ______

h) Water                     H₂O                – element or compound? number of atoms? ______

 

Summary – Chapter 2 – Quiz Questions #4
p. 69

10. Matter can be one of three things. List the 3 possibilities.
             a)
             b)
             c)

11. Elements are made up of one kind of ……………………

12. What contains two or more elements that are chemically combined?

13. Why are mixtures not pure substances?

14. List 5 physical properties that can be used to identify substances.
       a)                                                        d)
       b)                                                        e)
       c)

15. List 2 chemical properties of substances.
        a)
        b)

16. What type of change does not alter the identity of the substance?

17. When a substance has been altered so that it has different properties, we say it has
         undergone a …………………. change.

18. How do you separate a MIXTURE?

19. How do you separate a COMPOUND?