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Chemistry (Names of compounds (Iron, Lead, Carbon, Calcium, Hydrogen,…
Chemistry
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Compounds
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Compounds work together to creat water, a compound.
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Some chemicals can be dissolved in water, like salt, sodium chloride
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Chemical reactions usually involve a change in appareance, for example, the colour could change and that would be a chemical reaction
A Physical reaction is when something dissolves or a state changes, a state change is when something is a liquid and it turns into a solid, etc etc
All substances can be solids, liquids or gasses.
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