Middle school8 min

Reactants and products of a chemical change

Recognise a chemical change, name what disappears and what appears, and the two identification tests to know.

The essentials

1

Chemical change

Some substances disappear: the reactants. New substances appear: the products. It is written reactants \rightarrow products, the arrow reading "gives".
2

Signs of a reaction

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3

Two tests to know

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4

Limiting reactant

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ƒWrite my own sheetOr start from a blank page: rewriting a concept in your own words is how it sticks.