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3 cards from this section. Quick, good the night before a test.
What is a sign of a chemical change?
Think of reactions you've seen in experiments.
Name one characteristic of a chemical change.
What happens to the original substances?
What occurs during a chemical change?
Remember the definition of a chemical change.
True or False: All chemical changes are reversible.
Consider examples like burning wood.
You combine hydrochloric acid and sodium bicarbonate. Describe the observations that indicate a chemical change, including whether it is reversible.
Think about the gas that is formed during the reaction.
Discuss why cooking food is a chemical change. Provide examples of physical changes occurring during cooking.
What happens to the molecular structure of food while cooking?
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