science

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Across
  1. 3. Carbon + Oxygen
  2. 8. when two elements react to one another
  3. 10. the substance at the end of a chemical reactions
  4. 11. a substance or matter in a state in which it will expand freely to fill the whole of a container.
  5. 12. the term given to the corrosion of iron
Down
  1. 1. a substance that flows freely but is of constant volume.
  2. 2. a substance that takes part in and undergoes change during a reaction.
  3. 4. what is O2?
  4. 5. a group of atoms chemically joined together
  5. 6. a solid material which is typically hard, shiny, malleable, fusible
  6. 7. what makes up matter?
  7. 9. when elements combine chamically, they produce?