Across
- 2. A reaction with oxygen that releases heat or light.
- 4. The time it takes for half the nuclei to decay.
- 5. A method for judging the age of artefacts or fossils by analysing the amount of carbon-14 in the fossil.
- 6. A reaction that absorbs energy.
- 7. A reaction of an acid base forming salt and water.
- 9. A very high energy electromagnetic.
- 10. A small, negatively charged particle that can be ejected from a nucleus during a nucleus reaction it is identical to an alert Ron.
- 11. Chemical reaction that releases energy.
- 12. Series of chemical reactions that release energy from glucose.
Down
- 1. The breakdown of metals due to their reaction with other chemicals.
- 3. A chemical equation that has the same number of each type of atom on both sides of the arrow.
- 8. A particle made up of two protons and two neurons, making it identical to the helium nucleus.