chemistry

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Across
  1. 2. / relating to composed of or using ions
  2. 3. / substance that takes part in and undergoes change during a reaction
  3. 5. / the state or process of rotting
  4. 7. / a state of matter in which it will expand freely
  5. 10. / a part or aspect of something abstract
  6. 14. / consisting of two atoms
  7. 15. / a thing that is composed of two or more seperate elements
  8. 16. / firm and stable in shape
  9. 17. / the process of burning something
  10. 19. / a subscript letter figure or symbol
  11. 20. / a solid material that is typically hard
Down
  1. 1. / the combination of ideas to form a theory or system
  2. 4. / a substance that increases the rate of a chemical reaction/ an action performed or a feeling experienced in response to a situation or event
  3. 6. / a numerical or constant quantity placed before and multiplying the variable
  4. 8. / of or containing water typically as a solvent
  5. 9. / consisting of one atom
  6. 11. / a substance that flows freely
  7. 12. / a quantity obtained by multiplying quantities together
  8. 13. metal / an element or substance that is not a metal
  9. 18. / relating to or consisting of molecules