Postlab for Chemical and Physical Changes and Properties SD Flashcards

Classify the following observation as a physical or chemical change: Mothballs gradually vaporize in a closet.

Classify the following observation as a physical or chemical change: hydrochloric acid etches calibration marks into a piece of glassware.

Classify the following observation as a physical or chemical change: Baking soda fizzes when mixed with vinegar.

Classify the following observation as a physical or chemical change: A rubber band is stretched.

Classify the following observation as a physical or chemical change: Sugar is dissolved in hot coffee.