C.2 EOY10 Flashcards
(13 cards)
1
Q
How are elements arranged in the periodic table
A
- By atomic number
2
Q
Why do elements in the same group react similarly?
A
As they have the same number of electrons in their outershell
3
Q
Metal properties
A
- Conduct electricity
- Higher Melting point
- Ductile
- Malleable
4
Q
Non metal properties
A
- Electrical insulator (expect carbon)
- Gain or lose electrons turning into ions
5
Q
Where are metals found
A
- Left hand side and centre
6
Q
Where are non metals
A
- Right hand corner (above staircase)
7
Q
Group 0
A
- Nobel Gases
- Have 8 electrons in their outershell
- Very stable
- Monotomic gases
- Highest Boiling point at bottom
8
Q
Group 7
A
- Halogen
- Coloured gases
9
Q
Reaction of Halogen
A
- Become less reactive down the group
10
Q
Displacemnet Reaction
A
A more reactive halogen displaces a less reactive halogen
11
Q
Size when you go down a group
A
- Number of shells occupied by electrons increase
- Becomes larger
12
Q
Effect of increased size of electrons
A
- Large atoms lose electrons more easily going down a group
- Large atoms gain electrons less easily going down a group
13
Q
Why is it easier to lose/ harder to gain electrons at the bottom of the group
A
- Negative electrons are further away form positive nucleus
- Inner electrons shield the outer electrons
