Chemistry Revision Crossword

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Across
  1. 1. Has no charge and party makes up the nucleus of an atom.
  2. 3. Characteristic of a material.
  3. 4. An alloy may be _ _ _ _ _ because it has an advanced feature such as shape memory alloys.
  4. 8. A method of separating a mixture of chemicals, this can be done with filter paper and a solvent or with a gas in a solid column.
  5. 9. When a substance has single bonds.
  6. 10. Speeds up chemical reactions without being used up in the process.
  7. 12. A liquid capable of dissolving another substance, used in paper chromatography to separate dyes.
  8. 14. Atoms of the same element that have different numbers of neutrons so also have a change of mass.
  9. 15. Electrons that have come away from their nucleus in metallic bonding.
  10. 16. A reaction that releases energy from burning a fuel.
  11. 17. A mixture of two elements, one of which is a metal.
  12. 18. An allotrope of carbon with a very high melting point, it is extremely hard and each atom is joined to four others by strong covalent bonds in a giant covalent structure.
Down
  1. 2. A conductor through which an electrical current enters or leaves, used in electrolysis.
  2. 5. A large molecule with many bonds that causes it to have a huge network.
  3. 6. Occupies shells around the nucleus of the atom and are negatively charged.
  4. 7. A mass _ _ _ _ _ _ _ _ _ _ _ _ is the detector used in gas chromatography.
  5. 11. Relative _ _ _ _ _ _ mass is the large number shown with an element in the periodic table to represent the element's mass as it's actual mass it too small to measure.
  6. 13. Positively charges and partly makes up the nucleus of an atom.
  7. 16. _ _ _ _ _ _ _ _ bonds are shared pairs of electrons.
  8. 19. _ _ _ _ _ bonds can be formed when a metal and a non metal react together and either gain or lose electrons caused by the strong electrostatic forces between oppositely charged ions.