Chemical reactions retake review

Front

What is a balanced chemical equation?

Back

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

Front

How do you balance a chemical equation?

Back

To balance a chemical equation, adjust the coefficients in front of the compounds to ensure that the number of atoms for each element is equal on both sides.

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass cannot be created or destroyed in a chemical reaction; it can only change forms.

Front

What is a decomposition reaction?

Back

A decomposition reaction is a type of chemical reaction where one compound breaks down into two or more simpler substances.

Front

What is the product of the decomposition of calcium carbonate?

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The products of the decomposition of calcium carbonate are carbon dioxide and calcium oxide.

Front

How do you calculate the mass of a product in a chemical reaction?

Back

To calculate the mass of a product, use the molar mass of the reactants and products along with stoichiometry based on the balanced equation.

Front

What is the balanced equation for the decomposition of mercury(II) oxide?

Back

2HgO → 2Hg + O2.

Front

What is the balanced equation for the reaction of hydrogen and chlorine to form hydrochloric acid?

Back

H2 + Cl2 → 2HCl.

Front

What is the balanced equation for the formation of water from hydrogen and oxygen?

Back

2H2 + O2 → 2H2O.

Front

What is a synthesis reaction?

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A synthesis reaction is a type of chemical reaction where two or more reactants combine to form a single product.