C2 States of Matter and Mixtures
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What are the properties of solids?
• Strong forces of attraction hold particles in fixed positions in a regular lattice arrangement • They vibrate about their fixed positions
What are the properties of liquids?
• Some force of attraction between the particles • Don’t keep a definite shape and fill the bottom of the container • Particles are constantly moving in random motion
What are the properties of gases?
• Little force of attraction between the particles • Fill their container • Particles are constantly moving in random motion
What is the mobile phase?
Where the molecules can move - e.g. solvent
What is the stationary phase?
Where the molecules cannot move - e.g. chromatography paper
What are the processes to treat water in the UK?
• Filtration - removes large impurities • Sedimentation - removes any small impurities • Chlorination - kills any harmful bacteria and microbes