Which term describes a change that produces one or more new substances?

Which term describes a change that produces one or more new substances?

• A. Physical Change
• B. Neutralization
• C. Chemical Change
• D. Endothermic reaction

Answer: (C)

Producing one or more new substances means the material’s composition has changed, which is a chemical change. In a chemical change, bonds break and new bonds form, giving substances with different properties than the starting materials. Physical changes, like melting ice or tearing paper, alter appearance or state but do not create new substances. Neutralization is a specific example of a chemical change where acids and bases react to form salt and water, but the general term for any change that produces new substances is chemical change. Endothermic reaction describes heat flow during a reaction and does not by itself determine whether new substances are formed.

Producing one or more new substances means the material’s composition has changed, which is a chemical change. In a chemical change, bonds break and new bonds form, giving substances with different properties than the starting materials. Physical changes, like melting ice or tearing paper, alter appearance or state but do not create new substances. Neutralization is a specific example of a chemical change where acids and bases react to form salt and water, but the general term for any change that produces new substances is chemical change. Endothermic reaction describes heat flow during a reaction and does not by itself determine whether new substances are formed.