Changing States: Melting and Freezing (Part 3)

What You'll Learn

Physical changes alter the appearance of matter without changing its chemical identity. Cutting paper, melting ice, and dissolving sugar are all physical changes.

Key Words

reactant
product
conservation of mass

Steps

Step 1 — Read

Read and learn: Physical changes alter the appearance of matter without changing its chemical identity. Cutting paper, melting ice, and dissolving sugar are all physical changes.

Step 2 — Do

Conduct the experiment by following the instructions.

Step 3 — Observe

Look for patterns in your observations.

Step 4 — Record

Make a graph or chart showing your results.

Check Your Understanding

Question 1

1 of 3

Which is an example of a chemical change?