Across
- 3. Occurring without definite aim
- 6. Change from solid to liquid without passing through the liquid state
- 8. Smallest particle of an element
- 11. Uses electricity to break down compounds into simpler substances
- 13. Something that binds , holds something together
- 15. A reactions which results in the increase in surrounding temperature
- 18. Primary charge carriers in electric current
- 19. Neat and regular sequence
- 20. Pressed together, dense, compact
Down
- 1. Substance that cannot be broken down any further
- 2. Magnetic force between 2 oppositely charged bodies causing them to draw together
- 4. Substance that undergoes a chemical change in a given reaction
- 5. A reaction which results in the decrease in surrounding temperature
- 7. A proton or a neutron
- 9. Can be returned to original state
- 10. An electrically charged atom formed by the loss or gain of one or more electrons
- 12. Process which causes rusting & spoiling of fresh food
- 14. Change from gas to solid without passing through the liquid state
- 16. 2 or more elements involved
- 17. 2 or more atoms chemically combined together (a group of atoms)