Reaction Types year 9

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