Across
- 2. / the new substance that is formed in a chemical reaction
- 4. / substance in a chemical reaction that undergoes a change
- 7. / Looks like one substance
- 9. / Groups of elements that have common characteristics
- 10. Change / a new substance is formed
- 11. / 2 or more substances that are physically combined
- 12. / Anything that has mass and volume
Down
- 1. Change / no new substance is formed
- 3. / Visibly different substances
- 5. Gases / Are not reactive because of their filled outside valance shell
- 6. / 2 or more atoms
- 8. / Made of one type of atom
- 10. / More than one type of atom combined