- Alkali metals
- Form ionic compounds
- One electron in outer shell
- Reactions with ~ water, chlorine, oxygen~
- Reacts more violently down the group (very reactive)
1 of 8
Group 7 (Halogens)
- Reactivity decreases down the group
- Harder to gain an electron
- Melting and boiling points increase down the group
2 of 8
Displacement ~halogens~
when more reactive halogen can displace a less reactive halogen from a solution of its salt
e.g - F₂ +2NaCl ➝2NaF +Cl₂
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Group 0 (Noble gases)
- Unreactive ~full outer shell
- Boiling point increases going down the group
4 of 8
Metals
- Strong
- Malleable
- Good conductors
-High melting points
- Form positive ions
5 of 8
Non metals
- Form negative ions
- Brittle
- Dull- looking
- Does not conduct electricity
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Mendeleev
- Elements with similar properties were in the same groups
- Didn't follow strictly atomic mass
- Left gaps for undiscovered elements
7 of 8
Isotopes after Mendeleev
- Different atomic mass
- Same chemical properties
8 of 8
Other cards in this set
Card 2
Front
- Reactivity decreases down the group
- Harder to gain an electron
- Melting and boiling points increase down the group
Back
Group 7 (Halogens)
Card 3
Front
when more reactive halogen can displace a less reactive halogen from a solution of its salt
e.g - F₂ +2NaCl ➝2NaF +Cl₂
Back
Card 4
Front
- Unreactive ~full outer shell
- Boiling point increases going down the group
Back
Card 5
Front
- Strong
- Malleable
- Good conductors
-High melting points
- Form positive ions
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