Download Key - Sardis Secondary

Name
Date
Class - - - - -
·--~
2-3 Review and Reinforcement
Matter
Complete the following sentences by filling in the appropriate word from the list below.
gas
liquid
solid
plasma
.matter
energy
physical
chemical
evaporation
Matter
1. - - - - - - - - - - is anything that has mass and volume.
2.
3.
4.
solid
The two states of matter that occupy a definite volume are - - - - - - - - - - a n d
liquid
plasma are the other two states of matter.
Gas
and
--------------------------Chemical
---------------changes
alter the identity of a substance, whereas
- -physical
- - - - - - - - - - - changes do not.
Identify whether each of the following changes is a physical change or a chemical change. Write a
"P" on the line for a physical change and a "C" for a chemical change.
P
C
P
P
C
C
P
P
P
C
5. water boiling
6. iron rusting
)
7. butter melting
8. alcohol evaporating
9. wood rotting
10. leaves changing color
11. glass breaking
12. mowing the lawn
13. magnetizing a nail
14. baking a cake
Answer each of the following questions in the space provided.
15. What is the relationship between the kinetic energy of molecules and their physical state?
As kinetic energy increases, the phase
changes from solid to liquid to gas.
18
Chapter 2
©Prentice-Hall, Inc~
Name ~~----------------------------- Date ------------ Class ---------dl"'>
2-3 Review and Reinforcement (continued)
11:·11 (
~-'
16. How would you determine whether a change in matter is a physical change or a chemical
change?
If new properties appear that suggest
this.
eg: heat, colour change, gas,
etc.
17. What properties do both glass and plastic share that allow them to be substituted for each
other in some applications? What properties do glass and plastic have that make them quite
different?
{(['
Both are clear/transparenet. Allow
you to see the contents.
Glass brittle, flexability, melting
point.
18. Helium is an inert gas that does not react with other substances to form compounds. Would it
be correct to say that helium has no chemical properties? Explain your answer.
No. Although inert, this is a
chemical property.
© Prentice-Hall, Inc.
Chapter 2 19
I