Across
- 3. a shape that that all the particles are compact together
- 6. 2 or more atoms connected by a chemical bond
- 7. variety of particles made together
- 10. a substance made by mixing more than one substance together
- 12. carbon, hydrogen, fluorine, chlorine, helium
- 13. 2 or more different elements combined
- 14. a substance or matter in a state in which it will expand freely
- 15. a substance that is made on particles of one kind
Down
- 1. water-less compact than a solid
- 2. Are those that can be observed without changing their identity
- 4. Examples are burning wood, souring milk, rusting of iron
- 5. ____________ can result of a reaction in a substance
- 8. Examples are chopping carrots, ice melting, boiling water
- 9. extremely small particles that are basic building blocks
- 11. a form of matter in which many of the electrons wander around freely