Part 1-Label each process as a physical or chemical change:
• a. perfume evaporating on your skin
• f. hot glass cracking placed in cold water
• b. butter melting
• g. melting copper metal
• c. wood rotting
• h. burning sugar
• d. charcoal heating a grill
• i. mixing sugar in water
• e. autumn leaves changing color
• j. digesting food
Part 2-Which of the following would NOT be a physical change?
• a. freezing water to make ice cubes
• f. grating cheese
• b. melting gold to make jewelry
• g. melting cheese
• c. burning gasoline in a lawnmower
• h. fermenting of cheese
• d. boiling water for soup
• i. mixing two cheeses in a bowl
• e. tearing a piece of aluminum foil
Part 3-Which are physical and which are chemical changes?
• a. boil
• j. freeze
• b. burn (combustion)
• k. oxidize
• c. condense
• l. tarnish
• d. corrode
• m. explode
• e. crumple
• n. grind
• f. ferment
• o. rot
• g. melt
• p. vaporize
• h. rust
• q. photosynthesis
• i. crush
• r. sublimation