chemistry revision

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created 9 years ago by kirsty_boucher
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chemistry
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1

catalyst

speeds up a reaction

2

nitrogen and hydrogen make

ammonia

3

eutrophication

rain water dissolves fetilisers which run into water and lakes. when waterways become too rich with nutrients which allows algae to grow widely and use up all the oxygen.

4

continous process is used when

things need to be made in large amounts, production takes place day and night through out the year

5

batch process is used when

if something is needed in small amounts, medical drugs are only made when they are needed

6

electrolysis

is the use of an electrical current to decompose a compound into elements

7

acid + base makes

salt + water

8

isotope

atoms with the same number of protons but different number of neutrons

9

base

solid with pH greater than 7

10

alkali

a base that has been dissolved in liquid