Across
- 5. It is any aspect of a substance which is only seen by means of a chemical reaction.
- 6. It is a change from a solid to a liquid usually through the action of heat.
- 7. It is the amount of matter or substance that makes up an object.
- 8. It is the process of changing from a liquid to a vapor.
Down
- 1. Any substance (as an acid) that is formed when two or more other substances act upon one another or that is used to produce a change in another substance.
- 2. The act of combining.
- 3. It is existing in a form that can be touched or seen physical objects.
- 4. It is the process when a liquid turns into a solid.