Chemical Reactions Retake Qz

Front

What is a chemical reaction?

Back

A process in which substances (reactants) are transformed into different substances (products) through the breaking and forming of chemical bonds.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed; the total mass of reactants equals the total mass of products.

Front

What are reactants in a chemical reaction?

Back

Substances that undergo change during a chemical reaction.

Front

What are products in a chemical reaction?

Back

Substances that are formed as a result of a chemical reaction.

Front

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

Back

A balanced chemical equation has the same number of each type of atom on both sides of the equation, reflecting the law of conservation of mass.

Front

What is a coefficient in a chemical equation?

Back

A number placed in front of a chemical formula to indicate how many molecules or moles of that substance are involved in the reaction.

Front

What is a subscript in a chemical formula?

Back

A number written below and to the right of a chemical symbol that indicates the number of atoms of that element in a molecule.

Front

What is the balanced equation for the reaction between zinc sulfate and lithium carbonate?

Back

ZnSO₄ + Li₂CO₃ → ZnCO₃ + Li₂SO₄.

Front

What are the products of the combustion of acetic acid (C₂H₄O₂)?

Back

CO₂ and H₂O.

Front

How do you determine if a chemical equation is balanced?

Back

Count the number of atoms of each element on both sides of the equation and ensure they are equal.