| Across |
| 3. |
Two or more substances combined |
| 4. |
A combination of symbols that represent a compound and the amount |
| 6. |
One or two letters that represent an element |
| 7. |
Pure substances formed by the combination of a metal and a non-metal |
| 9. |
One type of matter |
| 12. |
Arranged elements in the periodic table according to their properties |
| 13. |
Subatomic particle with a positive electrical charge |
| 15. |
In a chemical reaction the total mass of the reactants is equal to the total mass of the products |
| 16. |
First chemistry text |
| 19. |
Average mass of an element |
| 20. |
A chemical reaction which absorbs heat energy |
| 21. |
Cloudy mixture that cannot be separated |
| 22. |
Number of protons an element has |
| 24. |
Subatomic particle with a negative electrical charge |
| 25. |
A new substance produced in a chemical reaction |
