Chemical Equations/Law of Conservation of Matter Flashcard

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 the coefficient in a chemical equation represent?

Back

The coefficient indicates the number of molecules or moles of a substance involved in the reaction.

Front

What is the Law of Conservation of Matter?

Back

The Law of Conservation of Matter states that matter cannot be created or destroyed in a chemical reaction; it can only change forms.

Front

How do you know if a chemical equation is balanced?

Back

A chemical equation is balanced when the number of atoms of each element is the same on both sides of the equation.

Front

What is a reactant in a chemical reaction?

Back

A reactant is a substance that undergoes change during a chemical reaction.

Front

What is a product in a chemical reaction?

Back

A product is a substance that is formed as a result of a chemical reaction.

Front

What is the difference between a coefficient and a subscript in a chemical formula?

Back

A coefficient indicates the number of molecules, while a subscript indicates the number of atoms of an element in a molecule.

Front

What does it mean for a chemical reaction to be 'balanced'?

Back

A balanced chemical reaction has equal numbers of each type of atom on both sides of the equation.

Front

Give an example of a balanced chemical equation.

Back

4Al + 3O₂ → 2Al₂O₃ is an example of a balanced chemical equation.

Front

What happens to the mass of reactants and products in a chemical reaction?

Back

The total mass of the reactants equals the total mass of the products due to the Law of Conservation of Matter.