Properties of Matter Quiz

Q1: In the Crime Scene lab, some of your samples “fizzed” (active spontaneous bubbling). Fizzing is an example of which type of change? A: Chemical

Q 2: If I were to take a metal wire and bend it around a corner, this would be an example of which type of change? A: Physical

A: Do tests; compare results (same results = same substance Q 3: What could we do to determine if two unknown substances were the same thing? ? (use the two skateboards & p A: Do tests; compare results (same results = same substance

Q 4: All phase changes are which type of change? A: Physical

Q 5: What about this phase graph would be different if we changed substances? A: The temperature

Q 6: What happens to a substance in ALL Physical Changes? A: Stays the same substance!

Q 7: Water in a pot is heated to the point of boiling Q 7: Water in a pot is heated to the point of boiling. The evaporation into a vapor is which kind of change? A: Physical

Q 8: A flat spot on a phase graph represents what? ***Flat spots on the graph are:_________________ A: A phase change!

Q 9: What happens to ALL substances when they are changed chemically? A: They are changed into a brand new substance!

Q 10: What evidence do you have that dissolving a substance in water is a physical change? A: In the boiling water lab, the salt was left behind when the water evaporated.

Q 11: How would you determine if a change of color was a chemical or physical change? A: Unexpected Color = Chemical (rxn) Expected Color = Physical (mixing)

Q 12: Burning is always which type of change? A: Chemical