Chemical Reaction

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Across
  1. 2. it occurs when two or more compounds combine to form one compound.
  2. 3. it occurs when saltwater reacts with concrete pillars which contain iron to form Iron chloride
  3. 4. it occurs when carbonic acid in soft drinks decomposes to give carbon dioxide gas
  4. 7. it is a type of reaction where part of of one reactant is replaced by part of another reactant
  5. 8. any liquid or solid water that falls from the atmosphere to the Earth
Down
  1. 1. it occurs when oxygen combines with a compound to form carbon dioxide and water
  2. 2. any substance that has a defined composition
  3. 5. a rearrangement of the atoms or molecules of two or more substances that come into contact with each other, resulting in the formation of one or more new substances
  4. 6. it is an acid and a base react with each other, generally, the product of this reaction is salt and water
  5. 9. an example of this is rusting of iron, respiration in humans, and the burning of fuels