Across
- 3. gases-group of chemical elements that have similar properties
- 5. electrons-electron the one outer shell of an atom
- 7. change-something you can physically change
- 8. A substance that undergoes a change during a reaction
Down
- 1. aftermath of chemical reaction
- 2. equation-symbolic representation of a chemical reaction
- 4. of conservation of mass-all transfers of matter in energy stay consistent
- 6. metals-a Coloum of elements that very reactive