Chemistry

1. Freezing, Melting, Boiling: Freezing & melting point is 32F. Boiling point is 212F. Freezing is when a liquid turns into a solid. Melting is when a solid turns into a liquid. Boiling is when liquid turns into vapor.

2. Chemical Reactions: A chemical transformation, occur when two substances interact to form new compounds or molecules (rust, metabolism, burning of wood, etc.)

3. Properties of Matter: Physical properties can go back to their original form (texture, color, melting point, boiling point, density, etc.) Chemical properties cannot go back to their original form (toxicity, flammability, chemical stability, etc.)

4. States of Matter: There are 4 states of matter. They are solid, liquid, gas, and plasma. They each have a different form of bonds.