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

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

Back

The mass of the reactants is equal to the mass of the products.

Front

What does a balanced chemical equation represent?

Back

A balanced chemical equation shows the number of atoms of each element involved in a reaction, ensuring that mass is conserved.

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

Can mass be created or destroyed in a chemical reaction?

Back

No, mass cannot be created or destroyed; it is conserved.

Front

What is an example of a chemical reaction that demonstrates the conservation of mass?

Back

The reaction of hydrogen and oxygen to form water: 2H₂ + O₂ → 2H₂O.

Front

What is the significance of balancing a chemical equation?

Back

Balancing a chemical equation ensures that the number of atoms for each element is the same on both sides, reflecting the conservation of mass.

Front

What happens to the total mass in a closed system during a chemical reaction?

Back

The total mass remains constant in a closed system during a chemical reaction.

Front

What is an example of a physical change where mass is conserved?

Back

Melting ice into water; the mass of the ice is equal to the mass of the water.