Question

categorize the examples based on whether they describe a physical change or a chemical reaction. growth of a seed into a seedling, wax melting from applied heat, making caramel by burning sugar, tarnishing of silver, grinding wheat to make flour, adding copper with gold to make jewelry. physical change, chemical reaction

Explanation:

A physical change alters the form or appearance of a substance without changing its chemical composition. A chemical reaction results in the formation of new substances with different chemical properties. Wax melting, grinding wheat, and alloy - making are physical changes as the substances' chemical identities remain the same. Seed growth, sugar - burning, and iron - rusting are chemical reactions as new substances are formed.

Answer:

Physical Change: wax melting from applied heat, grinding wheat to make flour, adding copper with gold to make jewelry
Chemical Reaction: growth of a seed into a seedling, making caramel by burning sugar, tarnishing of iron