Chemistry - yr 10
Across
- 3. A substance that absorbs protons.
- 4. Metal and non - metal ions in a lattice
- 7. inert gases
- 8. A substance that contributes Hydrogen ions.
- 9. An atom which has gained or lost electrons.
- 12. Reactive gases normally form diatomic molecules.
- 15. List of elements.
- 16. Reactions that absorb heat
- 17. X + Y -> XY
Down
- 1. One type of double displacement reaction
- 2. XY -> X + Y
- 4. XY +Z -> XZ + Y
- 5. Atoms which differ in the number of neutrons.
- 6. All equations must be:
- 10. A chemical reaction in which a substance burns in oxygen gas.
- 11. Number of protons plus neutrons
- 13. An insoluble solid.
- 14. Chemical properties are due to