Super Simple Chemistry
Surrounded by Chemicals by
Chemicals are all around us. We can see smell taste hear and touch them all the time. Chemicals are not just things that a chemist uses in a science laboratory. There are chemicals in the food you eat at lunch the soap you use to wash your hands and the fizzing bubbles you can hear when you open a can of lemonade. Turn the pages of this book to find out about chemicals what they are and how they interact with each other to create the Universe we live in.
Everything You Need to Ace Chemistry in One Big Fat Notebook by 
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Chem4Kids has basic chemistry help and information. A great starting point.
Bitesize Science BBC Separating Mixtures: Different experimental techniques are used to separate a variety of mixtures into individual substances.
Chemistry for Kids explains the different methods for separating mixtures. There is a 10 questions quiz at the end.
Mixtures - When two or more substances are placed together, and they do not form chemical bonds between them, the resulting substance is called a mixture. The ingredients in a mixture can usually be separated using physical means, such as filtering.
Water and Oil - A mixture of water and oil does not change either of its ingredients. The oil floats to the surface and can be removed.
Chromatography - A liquid mixture that contains microscopic particles can be separated using chromatography. When the mixture is placed on absorbent paper, the various particles move outward with the liquid at different speeds, allowing them to be separated on paper.
Centrifuging - A liquid containing a mixture of substances can be separated in a centrifuge. A centrifuge spins the liquid very quickly. The white and red blood cells in a sample of blood can be separated in a centrifuge.
Filtering - A liquid containing an insoluble solid can be separated using filtration. If a solid can't dissolve in a particular solvent, it is said to be insoluble. A mixture of sand and water can be separated by passing it through a filter.
Distillation - When the chemicals in a liquid mixture turn into gases at different temperatures, distillation can be used to separate them. The gas produced by heating the mixture is carried away through a tube and then cooled to produce the pure liquid. Alcohol is distilled in this way from fermented plant material.
Evaporation
• Clothes drying in the dryer or on the washing line.
• Evaporating water to retrieve salt or sugar.
Filtering
• Using a jug with a filter so water from the tap can be filtered for drinking.
• Using a coffee filter for filtering coffee.
• Using a tea strainer or tea bag.
• Filters in pools, air conditioners, vacuum cleaners and car engines.
Sieving in cooking
• Removing rice or pasta from cooking water.
• Sifting flour or other ingredients.
• Separating an egg.
• Washing lettuce in a salad spinner.
• Chemists – decanting, filtering, distilling, chromatography.
• Pharmacists – decanting, filtering.
• Chefs – decanting, sieving, filtering.
• Dentists – safe disposal of mercury fillings (filtering).
• Miners – jigging and panning, hand picking.
• Archaeologists and geologists – sieving, sifting, hand picking.
• Doctors – chromatography for blood processing, filtering blood, testing blood.
• Farmers – winnowing, threshing, filtering, decanting.
• Industries such as water treatment plants, sugar mills, factories, refineries.
Processing plants also use a range of separation techniques.
