Match the sentence beginnings a to j with endings 1 to 10

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1 Match the sentence beginnings a to j with endings 1 to 10.
1 it produces magnesium oxide.
2 it lasts longer.
a If
you
cool water to zero degrees, it
b Most things expand
c When magnesium burns in oxygen,
d If x times y is six and x is three,
3 forms ice.
4
you get static electricity.
e If you touch a live wire,
f Green plants can't survive
g When a bicycle speeds up,
5 you get an electric shock.
6 if you heat them.
7 it is more difficult to stop.
h If you put food in a fridge,
8 when there is no light.
If you rub a balloon with a cloth,
9 then y is two.
į If you fill a balloon with hydrogen,
10 it floats in the air.