Question

1. ice is often a different color than water and is not transparent. this means that freezing is an example of a chemical change. is this statement true? explain.

Explanation:

A chemical change produces new substances, while a physical change (like freezing) only alters the state (solid/liquid/gas) of a substance. Freezing water (H₂O) into ice is a physical change because the molecules remain H₂O—no new substance is formed. The color/transparency differences are due to structural changes in the solid (ice has a hexagonal lattice affecting light), not a chemical reaction. So the statement is false.

Answer:

The statement is false. Freezing is a physical change, not a chemical change. In freezing, water (liquid) becomes ice (solid), but the substance remains H₂O (no new substance is formed). Chemical changes create new substances (e.g., rusting, combustion), while physical changes (like state changes: freezing, melting, boiling) only alter the substance’s form/state, not its chemical identity. The differences in color/transparency between ice and water relate to physical structural changes (ice’s lattice affects light), not a chemical reaction.