Revision

2. The original chemicals that are reacted together in a chemical reaction.
4. A type of circuit made up of branches so that the current divides and only part of it flows through each component evenly.
5. A substance which absorbs H+ ions, and has a pH greater than 7.
8. A wave that moves at right angles to the direction of travel
10. A type of reaction where More energy is released when the products were formed than energy was used to break bonds in the reactants.(energy given off)
14. A substance which emits H+ ions
16. Heat transfer in liquids and gases where hotter particles move further apart due to increased vibration, and rise due to decreased density.
17. Heat transfer which does not involve matter. (It can happen in a vacuum.) Instead, electromagnetic waves carry the energy.

1. The distance between adjacent crests of a wave.
3. Different forms of an element that have different numbers of protons in the nucleus.
4. The new chemicals that are formed in a chemical reaction.
6. The height of the wave from the midpoint to the crest.
7. A type of reaction where more energy is taken in to break the bonds in the reactants than released by the bonds being formed in the products.(energy absorbed)
9. A wave that moves along the length of the wave in the direction of travel (compression wave).
11. Heat transfer in which particles in a solid transfer energy to neighbouring particles by vibrating and bumping into them.
12. Negatively charged subatomic particles with almost no mass, orbiting the nucleus.
13. A soluble base. (Another word for a base)Acid
15. A type of circuit made up of a path along which the whole current flows through each component one after another.