Chapter One & Two

NAME:

1. Define potential, kinetic and radiant energy.

2. What are the conservation laws of mass, energy, and mass-energy?

3. What is chemistry?

4. Differentiate between matter and energy?

5. How does determining the units of the answer to a problem help you choose a correct method of solution?

6. What is the density of a piece of cork that has a mass of 0.650 g and a volume of 2.71 cm³?

   1.76 g/cm³

   0.239 g/cm³

   4.17 g/cm³

   8.89 g/cm³

7. Barium perchlorate has a density of 2.74 g/cm³. What is the mass 0f 27.2 cm³ of this substance?

      74.5 g

    9.92 g

    0.101 g

    15 g

8. Cerium sulfate has a density of 3.17 g/cm³.  Calculate the volume of 599 g of this substance.

    0.00529 cm³

    1899 cm³

    37.9 cm³

    189 cm³

9. Classify the following properties as chemical or physical:

a. burning coal
Select One Chemical Property Physical Property

b. tearing a piece of paper
Select One Chemical Property Physical Property

c. kicking a football
Select One Chemical Property Physical Property

d. excavating soil
Select One Chemical Property Physical Property

e. exploding TNT
Select One Chemical Property Physical Property

10. Classify the following properties as chemical or physical.

a. density
Select One Chemical Property Physical Property

b. melting point
Select One Chemical Property Physical Property

c. length
Select One Chemical Property Physical Property

d. flammability
Select One Chemical Property Physical Property

11. What is the difference between an endothermic reaction and an
      exothermic reaction?
     

12. How many joules are required to heat 692 g of nickel from 22 ^oC to
     318 ^oC? (Cp of Ni = 0.444 J/g ^oC)
     20,250 J

     90,900 J

     900 J

     159.004 J

13. Copper has a specific heat capacity of 0.384 J/g ^oC. A 105 gram
     sample is exposed to 15.2 kJ in an insulated container. How many
     degrees will the temperature of the copper sample increase?
     0.995 ^oC

     689 ^oC

     0.00771 ^oC

     376 ^o

14. What are the seven SI base units?

15. What is the SI fundamental unit for mass? Select One g ml kg m K

16. List the number of significant digits for each of the following:

    a. 1 km     Select One 1 2 3 4 5 6 7 8 9 10

    b. 1.5 ml   Select One 1 2 3 4 5 6 7 8 9 10

    c. 2.15 000 cm²  Select One 1 2 3 4 5 6 7 8 9 10

    d. 5.380 000 0 s  Select One 1 2 3 4 5 6 7 8 9 10

17. What is a derived unit? Give two examples of each

18. What is the difference between accuracy and precision?