1
Q
name two properties of a group one element
A
-low melting points and boiling points
-very soft
- very reactive
2
Q
why are groups one elements very reactive
A
the more readily a metal loses its outer electrons the more reactive it is
3
Q
why do group 1 metals get more reactive as you go down the table
A
valence electrons are further away from the nucleus therefore electrons easily lost making the atom more reactive
4
Q
what is the test for hydrogen gas
A
- put a lighted sprint near a beacon of unknown gas and if hydrogen gas is present a squeaky pop noise will be made
5
Q
what are group 7 atoms known as
A
Halogens
Chemistry: Paper 2
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