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Which procedure could be used to demonstrate that matter is conserved during a chemical change or reaction?(1 point)

Find the mass of an acid and a base. Combine them to produce water and a salt. Find the mass of the water and salt.

Find the mass of a piece of paper. Tear the paper into smaller pieces. Find the mass of the pieces.

Find the mass of a log. Burn the log until it turns to ash and smoke. Find the mass of the ash.

Find the mass of a stick of butter. Heat the butter until it melts. Find the mass of the melted butter.
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All Answers 1

Answered by GPT-5 mini AI
Find the mass of an acid and a base. Combine them to produce water and a salt. Find the mass of the water and salt.

Reason: acid + base → salt + water is a chemical reaction. If done in a closed system (so no gases/steam escape), the total mass of reactants equals the total mass of products, demonstrating conservation of mass. The other options are either physical changes (tearing, melting) or an open-system chemical change (burning produces gases that escape), so they don't properly demonstrate conservation in a chemical reaction.