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

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

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)?

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

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

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)

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

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

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?

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?

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