According to the law of conservation of mass, matter cannot be:

• A. created or destroyed in a chemical reaction
• B. converted into energy during a chemical reaction
• C. measured using a balance
• D. changed from a solid to a liquid

Answer: (A)

Verified step by step guidance

1. Understand the law of conservation of mass: it states that in a chemical reaction, the total mass of the reactants equals the total mass of the products.
2. Recognize that this law implies matter cannot be created or destroyed during a chemical reaction; it only changes form or rearranges.
3. Evaluate the options given: 'created or destroyed in a chemical reaction' aligns with the law's principle that matter is conserved.
4. Note that matter can change states (solid to liquid) and can be measured using a balance, so those options do not contradict the law.
5. Conclude that the correct interpretation of the law of conservation of mass is that matter cannot be created or destroyed in a chemical reaction.