Across
- 4. A substance that reacts together with another substance to form products during a chemical reaction
- 6. Electrically charged particle, formed when an atom or molecule gains or loses electrons
- 7. A substance formed in a chemical reaction
- 9. Reaction in which energy is given out to the surroundings
- 10. In chemical reactions, a situation where the forward and backward reactions happen at the same rate, and the concentrations of the substances stay the same
- 12. A substance that changes the rate of a chemical reaction without being changed by the reaction itself
- 13. A collection of two or more atoms held together by chemical bonds
Down
- 1. Containing water of crystallisation, which can be removed by heating strongly
- 2. Mixture formed by a solute and a solvent
- 3. A substance containing no water
- 5. Reaction in which energy is taken in
- 8. A chemical reaction which can go both ways
- 11. A straight line that just touches a point on a curve