Across
- 3. First element on the periodic table
- 7. no new substances are made
- 8. a pure substance made from two more different elements that are chemically combinded
- 9. new substance made
- 11. Al
- 12. good conductors of heat and electricity
- 13. Au
Down
- 1. made of two or more different types of particles mingled together
- 2. table that contains all the known elements
- 4. Cu
- 5. H20
- 6. explodes when you put it in water
- 7. made of particles that area all the same
- 10. a pure substance that cannot be broken down into simple substances by chemical means