GCSE Chemistry – C3

Quantitative analysis tells you…
How much of the chemical there is.
Qualitative analysis tells you…
Whether a chemical is present.
Water with calcium and magnesium ions dissolved in it is…
Hard water.
Temporary hard water can be…
Made soft by boiling.
Hard water does not easily…
Form a lather.
6.02 * 10^23 is…
Avogadro’s Number.
One mole is…
6.02 * 10^23 particles.
Positive metal ions + Negative non metal ions =
A salt.
Acids are solutions which contain…
Hydrogen (H+).
Alkalis are solutions which contain…
Hydroxide (OH-).
The method of working out the concentration of a solution is called…
Titration.
One mole of any gas has a volume…
24dm^3
Plants only grow well with abundance of _______ in soil…
Nitrogen.
Excess fertiliser causes…
Eutrophication.
Esters are compounds with a low boiling point that have a sweet smell. They are used in…
Perfumes and flavourings.
Polyesters are many monomers joined by an ester bond. They are used…
To make cloth and fibres.
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