1. Question #1 Which type of matter is shown in the box below?
B. Can this type of matter be broken down into simpler substances?

2. Question #2
For each type of substance below, decide if it is formed by a physical or chemical change.
A. mixture B. compound

3. Question #3
Identify the elements found in the compound CH4 and how many of each type of element it contains.
What is the total number of atoms in a molecule of this compound (methane)?

4. Question #4
What physical property is being used to separate the sand and gravel?
Is the sand and gravel a mixture or a compound?

5. Question #5
Identify the solute and solvent in the solution shown below (coffee).

6. Identify each substance as a base, an acid or neutral.
Question #6
Identify each substance as a base, an acid or neutral.
lemon juice b. soap c. water
(ph = 3) (ph = 8) (ph = 7)

7. Question #7 A. Which type of chemical reaction is shown below?
B. What are the reactant(s) and what are the product(s)?

8. Question #8
Identify one piece of evidence that a chemical reaction is occurring in the image below:

9. Question #9
How much of substance X will dissolve at 60 oC?
What are two factors that affect how much of a solute will dissolve in a solvent?

10. Question #10
Which type of change results in new substances being formed?
What is true of the mass of the reactants and the mass of the products in a chemical reaction?
When an acid chemically reacts with litmus paper, what color does the litmus paper turn?

11. Question #11
Which of the following is a chemical change? (may be more than one)
water boiling
baking soda reacting with vinegar
chopping down a tree
cooking an egg