Across
- 4. to change the position or order of something.
- 5. an ending substance that is made during a chemical reaction.
- 7. able to cause damage.
- 9. The temperature when a liquid turns to gas.
- 11. A structure formed by repeated groups of atoms.
- 12. Letters and numbers that they types of atoms that make a substance.
- 14. an object or drawing that helps us understand something better.
- 15. the relative size of things.
Down
- 1. a substance that is added to soil to help plants grow.
- 2. a starting substance that is part of a chemical reaction.
- 3. A group of atoms joined in a particular way.
- 6. The temperature when a substance changes from solid to liquid.
- 8. Something that is made of all the same groups of atoms.
- 10. Something that can be observed about a substance.
- 13. the tiny pieces that all matter is made of.