EDEXCEL GCSE 9-1 COMBINED SCIENCE FOUNDATION: CHEMISTRY PAPER 1+2

1. are strong, form between non-metal atoms and often produce molecules, which can be elements or compounds (8, 5, 3, 4)
2. is the smallest particle of an element that still has its chemical properties (4, 2, 2, 4)
6. malleable- they can be pressed into shape without shattering (6, 3, 4)
8. Graphene is a giant molecular substance. Its structure resembles a single layer of graphite: each carbon atom is covalently bonded to three other carbon atoms and it has a regular lattice structure (4, 2, 8)
9. brittle in the solid state- they shatter when bent or hit (3, 6, 3, 4)
10. is the substance that dissolves (4, 2, 3, 6)

2. a compound consists of two or more different elements chemically joined together (4, 2, 1, 8)
3. Polymers are large molecules made from many smaller molecules, called monomers, joined together (4, 3, 8)
5. is an atom or a group of atoms with a positive or negative charge (4, 2, 2, 3)
7. a negatively charged ion formed when an atom or group of atoms gains one or more electrons (4, 2, 2, 5)

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