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JON CHASE:'Chemical reactions are all about collisions between ... be relevant for teaching chemistry and science in general at KS3 and KS4 in England, Wales and Northern Ireland and National ...

Writing word equations Chemical reactions can be represented by word equations. Learn more in this KS3 Chemistry guide from Bitesize. Writing symbol equations Chemical reactions can be summarised ...

See how well calcium works when it gets mixed with other liquids. A Gas Sudstation Make a bubbling chemical reaction out of baking soda, vinegar… and a little gas. It's a Gas Some chemical reactions make things that we can’t see. So how do we know ...