Year 9 Chemistry

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Across
  1. 2. Describes the table that organizes all known elements.
  2. 4. A substance made from two or more different elements chemically combined.
  3. 6. Positively charged particle in the nucleus.
  4. 10. The substance that dissolves the solute.
  5. 12. The process of changing from liquid to gas.
  6. 14. The substance that is dissolved.
  7. 16. A pure substance made of only one type of atom.
  8. 17. Mass per unit volume of a substance.
  9. 18. The force holding atoms together in a compound.
  10. 19. The smallest unit of an element.
  11. 20. A substance with a pH greater than 7.
  12. 23. Particle in the nucleus with no electric charge.
  13. 24. Gain of electrons during a chemical reaction.
Down
  1. 1. A process in which substances are transformed into new substances.
  2. 3. The process of changing from gas to liquid.
  3. 5. A substance that speeds up a chemical reaction without being consumed.
  4. 6. Scale used to measure acidity or alkalinity.
  5. 7. A homogeneous mixture of solute and solvent.
  6. 8. An atom or molecule with a net electric charge.
  7. 9. Two or more atoms chemically bonded together.
  8. 11. Atoms of the same element with different numbers of neutrons.
  9. 13. Loss of electrons during a chemical reaction.
  10. 15. Negatively charged particle that moves around the nucleus.
  11. 21. A substance with a pH less than 7.
  12. 22. The central part of an atom.