Writing balanced chemical equations review-chem

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Last updated 9:25 PM on 10/15/26
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9 Terms

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Reactant

A substance that takes part in chemical reaction

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Product

A new substance formed as a result a chemical reaction

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Precipitate

A solid that forms when two solutions react.

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Subscript

A small number written at the bottom right of a chemical symbol that shows how many atoms are present. ex: H2O

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Coefficient

  • Number in front of a chemical formula

  • shows the amount of molecules or units present ex: 2H2O


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Aqueous

  • A substance that dissolves in water

  • short version is aq


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What are the type of reactions and what are the equations for each?

  • Synthesis: A+B →AB

  • Decomposition: AB → A+B

  • Single displacement: A+BC →AC+B

  • Double displacement: AB+CD → AD+CB


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What are the 2 different solubility?

low solubility-s

high solubility-aq

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How do you know states for each elements?

Liquids: Mercury (Hg), Bromine (Br)

Gases: H2, O2, F2, N2, Cl2 and all Noble Gases (He, Ne, Ar, Kr, Xe, Rn).

Solids: Every other element on the table(solids like carbon/iodine/bromine)