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💏intro to chemistry review

key term - Chemical equation

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Definition

A chemical equation is a symbolic representation of a chemical reaction, showing the reactants and products with their respective quantities. It must obey the law of conservation of mass, meaning the number of atoms for each element must be equal on both sides.

5 Must Know Facts For Your Next Test

  1. Chemical equations use chemical formulas to represent reactants and products.
  2. Balancing a chemical equation ensures that the same number of each type of atom appears on both sides.
  3. Coefficients are used in front of compounds to balance the equation, not subscripts within formulas.
  4. A balanced chemical equation allows for stoichiometric calculations to determine the amounts of reactants and products involved.
  5. The phases of substances (solid, liquid, gas, aqueous) are often indicated in parentheses after each formula.

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