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# PART A: MULTIPLE CHOICE 1. Which of the following is a chemical property? a) color b) density c) flammability d) boiling point 2. A chemical appears to be cloudy. A scientific term for this description is: a) transparent b) translucent c) opaque d) foggy 3. Which...

# PART A: MULTIPLE CHOICE 1. Which of the following is a chemical property? a) color b) density c) flammability d) boiling point 2. A chemical appears to be cloudy. A scientific term for this description is: a) transparent b) translucent c) opaque d) foggy 3. Which of the following is NOT evidence of a chemical change? a) drastic color change b) odor change c) gas formed d) dissolving 4. Two or more atoms of the same type bonded together is called a(n): a) atom b) molecule c) compound d) ion 5. Which statement is true when considering ionic bonding? a) metals lose electrons to become negatively charged b) metals lose electrons to become positively charged c) electrons are shared between elements d) non-metals lose electrons to become negatively charged 6. Why do atoms bond together? a) To increase their mass b) To become less stable c) To become stable and have a full set of electrons d) To change their atomic number 7. Based on the number of valence electrons that oxygen has, how many times would it want to share electrons with another element to complete its orbital? a) 2 b) 4 c) 6 d) 8 8. In the formula $CaCl_2$, what does the subscript 2 indicate? a) There are 2 calcium atoms b) There are 2 chlorine atoms c) The compound has a charge of 2+ d) Calcium has 2 valence electrons # PART B: MATCHING & FILL IN | Classify | Example | Evidence | |----------------|------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------| | PC or CC | When syrup is warmed it becomes less viscous | The syrup is being warmed only | | PC or CC | Magnesium is mixed with hydrochloric acid and bubbles form | Bubbles are being formed, indicating a chemical change | | PC or CC | A glass beaker falls from the counter and breaks | There is a change in the size and shape. | | PC or CC | A beaker of water is put on a hot plate and heated until it boils | There is a change of state as condensation is happening. | | PC or CC | A piece of copper is placed into a solution and a silver solid forms | The substances are making a chemical reaction. |