C6
- Created by: ak27330
- Created on: 05-01-20 14:51
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- C6
- Group 1- Alkali metals
- Silvery solids, stored in oil, can cause chemical burns on skin
- one electron on outer shell, similar chemical properties
- all reactive, react similarly, the lower you go the more reactive
- Because outer electron is more easily lost the further it is from the nucleus
- low melting and boiling, soft
- alkali metal + water ---> metal hydroxide + hydrogen
- will dissolve in water and make alkaline solution
- More vigorous as you go down
- Group 7- Halogens
- similar chemical properties
- diatomic molecules, sharing a pair of electrons in a covalent bond
- As you go down melting and boiling points increase
- Some are poisonous gases at room temp
- Colour gets darker as you go down
- Chlorine test
- Damp litmus paper bleaches from chlorine gas
- As you go down reactivity decreases
- Because it's harder to attract an extra electron when the outer shell is far from the nucleus
- W/ metals -> metal halides Will react vigorously
- Halogen Displacement
- more reactive halogen, will displace a less reactive
- Chlorine + potassium bromide --> bromine + potassium chloride
- In an aqueous solution, solution will turn orange as bromine is displaced
- redox reaction, halogens gain (reduction), halide ion loses an electron (oxidation)
- Group 0- Noble Gases
- full outer shells
- don't need to bond
- inert- don't react much
- provide an inert atmosphere- argon stops filaments from burning away
- low density- helium in balloons and airships
- as you go down: density increases, melting and boiling increases
- Group 1- Alkali metals
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