Chemistry crossword

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Across
  1. 4. go into solution
  2. 8. is a substance containning only one atom
  3. 9. is a starting chemical reaction
  4. 14. contains two or more substances that arenot chemically combined
  5. 16. is the number of protons in the nucleus of an atom
  6. 17. is a chemical made in a chemical reactant
  7. 20. is something without colour
  8. 22. is a measure of the concentration of hydrogen or hydroxyl ions in a solution
  9. 23. is the psychical change in which a gas turns into a liquid in cooling
  10. 25. is a minute portion of matter
  11. 26. is a weak solution
  12. 27. is a substance in which two or more elements are chemically combined
  13. 29. is the bond formed between ions of opposite charge
  14. 30. is a temperature at which a liquid changes to gas
Down
  1. 1. the equipment used for a specific purpose, mainly experiments. ex. laboratory gown, test tube, beaker, etc.
  2. 2. is the idea that for particles to react, they must collide
  3. 3. is a group Vii
  4. 5. is how electrons in an atom are arranged in electron shells
  5. 6. is proteins made by living cells, that act as biological catalyst
  6. 7. is a chemical formula (H2O)
  7. 10. is a molecule contains two atoms joined by a covalent bond
  8. 11. is a charged atom or group of atoms formed by the gain or loss of one or more electrons
  9. 12. is a compound made up of ions, joined by ionic bonds
  10. 13. is tells you how much of one substance is dissolved in another
  11. 15. is where liquid turns into a gas at a temperature below its boiling point, taking place at the surface of the liquid
  12. 18. is how fast a reaction is
  13. 19. increase the rate of a reaction and is unchanged
  14. 21. is a cloudy mixture of two or more substances that settle on standing
  15. 24. elements are made up of atoms, which contain protons, neutrons, and electron
  16. 28. tells how light or heavy a substance is, using mass and volume