Chemical Equations

Front

What is a chemical equation?

Back

A chemical equation is a symbolic representation of a chemical reaction, showing the reactants and products along with their quantities.

Front

What does it mean for a chemical equation to be balanced?

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A balanced chemical equation has the same number of each type of atom on both sides of the equation, indicating that mass is conserved.

Front

How do you determine the number of atoms in a molecule?

Back

Count the subscripts in the chemical formula. If there is no subscript, it is assumed to be 1.

Front

What are reactants in a chemical equation?

Back

Reactants are the starting substances that undergo a chemical change in a reaction.

Front

What are products in a chemical equation?

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Products are the substances formed as a result of a chemical reaction.

Front

How many elements are in the compound C6H12O6?

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There are 3 elements: Carbon (C), Hydrogen (H), and Oxygen (O).

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How many atoms of oxygen are in Al₂(SO₄)₃?

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There are 12 atoms of oxygen in Al₂(SO₄)₃.

Front

What is the significance of coefficients in a chemical equation?

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Coefficients indicate the number of molecules or moles of a substance involved in the reaction.

Front

What is a subscript in a chemical formula?

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A subscript is a number written below and to the right of a chemical symbol, indicating the number of atoms of that element in a molecule.

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What is the law of conservation of mass?

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The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction.