Law Of Conservation of Mass

Front

What is the Law of Conservation of Mass?

Back

The Law of Conservation of Mass states that matter cannot be created or destroyed in a chemical reaction; it can only be transformed or changed.

Front

What happens to the mass of substances during a chemical reaction?

Back

The total mass of the reactants equals the total mass of the products.

Front

What is an exothermic reaction?

Back

An exothermic reaction is a chemical reaction that releases energy, usually in the form of heat.

Front

What is an endothermic reaction?

Back

An endothermic reaction is a chemical reaction that absorbs energy from its surroundings.

Front

If 0.25 grams of baking soda is added to 5 grams of water, what is the total mass of the solution?

Back

The total mass of the solution is 5.25 grams.

Front

What does it mean when we say matter can be transformed?

Back

It means that matter can change from one form to another, but the total mass remains the same.

Front

What is a common misconception about the Law of Conservation of Mass?

Back

A common misconception is that mass can be lost during a reaction; however, mass is always conserved.

Front

In a closed system, what happens to the mass of reactants and products?

Back

In a closed system, the mass of reactants before the reaction equals the mass of products after the reaction.

Front

What is the significance of measuring mass before and after a reaction?

Back

Measuring mass before and after a reaction helps to demonstrate the Law of Conservation of Mass.

Front

What can cause a decrease in mass during a chemical reaction?

Back

A decrease in mass can occur if gases escape from the reaction mixture.