Across
- 2. a substance with a PH between 8 and 14
- 3. speeds up a chemical reaction but remains unchanged
- 6. the periodic table is made up of 118 of these
- 7. substances which are chemically joined
- 8. an element from the noble gases
- 9. a substance with a PH of 7
- 10. a new _________ is always formed in a reaction.
- 11. an element from the transition metals
Down
- 1. substances which can be easily separated
- 2. a substance with a PH between 0 and 6
- 3. dioxide an example of a compound we breathe out
- 4. the smallest particle that exists
- 5. can be increased to speed up a chem reaction