Law of Conservation of Mass QuickCheck

Front

What does the law of conservation of mass state?

Back

The law of conservation of mass states that matter cannot be created or destroyed in a chemical reaction; it can only be transformed from one form to another.

Front

If a chemical reaction starts with 20g of reactants, how much mass will the products have?

Back

The products will also have a total mass of 20g, as mass is conserved.

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means.

Front

What happens to the mass of an egg when it is boiled?

Back

The mass of the egg remains the same before and after boiling, assuming no material is lost.

Front

What is a reactant?

Back

A reactant is a substance that is consumed 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 matter be created or destroyed in a chemical reaction?

Back

No, according to the law of conservation of mass, matter cannot be created or destroyed.

Front

What is the total mass of products if 64.2g of mercury (II) oxide decomposes completely?

Back

The total mass of products will be 64.2g, as mass is conserved.

Front

What is the significance of balancing chemical equations?

Back

Balancing chemical equations ensures that the law of conservation of mass is upheld, with equal mass of reactants and products.

Front

What is a molecule?

Back

A molecule is a group of two or more atoms bonded together, representing the smallest fundamental unit of a chemical compound.