Matter Practice
Name:
Period:
Directions: Identify if the following properties/changes are physical (P) or chemical (C).
1. A hamburger is cooked.
2. Thousand Island dressing and mayonnaise are mixed to make a “secret sauce” for your
hamburger.
3. Water is boiled.
4. Old ham goes bad in the refrigerator.
5. A rapper gets a tattoo on his forehead.
6. You cut your hair.
7. Baking soda and vinegar reacts and forms a gas.
8. A piece of metal is bent in half.
9. An aspirin is crushed into a fine powder.
10. Copper turns green when exposed to the environment.
11. Baking cookies.
12. Two clear liquids are mixed and a yellow color forms.
13. Diamonds are used to scratch glass.
14. A tree burns.
15. Water freezes.
16. A candle burning.
Directions: Read the following poem and answer the questions below.
Elements are simple things
That can’t be broken down.
When put together chemically,
They always form compounds.
But thinking of the usual way
That chemicals are found,
It’s jumbled up in mixtures that
Most chemicals abound.
Chemicals are everywhere–
One of life’s permanent fixtures.
Yes, chemicals really matter–
Those elements, compounds, and mixtures.
Elements are building blocks
From which all things are made.
There are over one hundred elements
In the element parade.
And they’re all made of atoms
Just as Mr. Dalton said.
It’s elements, pure and simple,
Nothing simpler, I’m afraid.
Chemicals are everywhere–
One of life’s permanent fixtures.
Yes, chemicals really matter–
Those elements, compounds, and mixtures.
Compounds form from elements,
And, ‘though it may seem strange,
When they form a compound,
Their properties all change.
As chemicals combine,
Their particles rearranged,
To form some different substances,
Their properties all change.
Chemicals are everywhere–
One of life’s permanent fixtures.
Yes, chemicals really matter–
Those elements, compounds, and mixtures.
With mixtures, it’s so different,
And there’s one thing you can bet–
Put salt and water together,
It will still be salty and wet.
‘Though you might be fearing changes,
There’s no reason for to fret.
Without chemical combination
There’s nothing new to get.
Chemicals are everywhere–
One of life’s permanent fixtures.
Yes, chemicals really matter–
Those elements, compounds, and mixtures.
17. According to the poem, what are three forms of matter?
18. In which form is matter most commonly found?
19. What are the main differences between elements, compounds, and mixtures?
20. Why is it that when you mix salt and water together, “It will still be salty and wet”?
21. Hydrogen is an explosive gas and oxygen supports combustion (burning). How is it possible,
then, for water, which is composed of hydrogen and oxygen, to put out fires?
22. Indicate whether each of the following describes an element, compound, homogeneous mixture
(solution), or a heterogeneous mixture.
a. Composed of more than one substance.
b. Simple substance that cannot be broken down by chemical or physical changes.
c. Has different properties than the substances that compose it.
d. Gold
e. Air
f.
Orange juice with pulp
g. Sugar
h. Copper
i.
Table salt
Density
Directions: Solve the density problems, show your work. All answers must have units and be in
correct significant figures.
V=l×w×h
V = Vf – Vi
d=m/V
23. One side of a perfectly square cube is 6.00cm long. Its weight is 220.7g. What is its density?
24. You have a piece of balsa wood with a length of 2.500cm, a width of 1.956cm, and a height of
4.002cm. Its mass is 295.45g. Calculate the density.
25. A bead weighs 15.65g. You place it in a graduated cylinder that originally has 20.70mL of water
in it. The water level rises to 31.93mL. Calculate the density of the bead.