chemistry unit 1

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• 2. what macromolecule is a giant structure with a 109.5° bond angle that has a high melting point? (7)
• 3. bonds between a non-metal and non-metal with a low melting and boiling point (8)
• 5. an allotrope of carbon, arranged in layers, with a bond angle of 120° (8)
• 6. what does the atomic radii do as you go down a group? (increase or decrease) (8)
• 7. what do melting points do from Na to Al (increase or decrease) (8)