Across
- 4. An alloy may be _ _ _ _ _ because it has an advanced feature such as shape memory alloys.
- 5. A large molecule with many bonds that causes it to have a huge network.
- 6. Positively charges and partly makes up the nucleus of an atom.
- 9. Electrons that have come away from their nucleus in metallic bonding.
- 10. _ _ _ _ _ _ _ _ bonds are shared pairs of electrons.
- 12. _ _ _ _ _ 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.
- 13. A mass _ _ _ _ _ _ _ _ _ _ _ _ is the detector used in gas chromatography.
- 14. When a substance has single bonds.
- 18. A conductor through which an electrical current enters or leaves, used in electrolysis.
- 19. A liquid capable of dissolving another substance, used in paper chromatography to separate dyes.
Down
- 1. 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.
- 2. 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.
- 3. Atoms of the same element that have different numbers of neutrons so also have a change of mass.
- 7. Has no charge and party makes up the nucleus of an atom.
- 8. Characteristic of a material.
- 9. 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.
- 11. A reaction that releases energy from burning a fuel.
- 15. A mixture of two elements, one of which is a metal.
- 16. Occupies shells around the nucleus of the atom and are negatively charged.
- 17. Speeds up chemical reactions without being used up in the process.