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 change forms.

Front

What happens to atoms during a chemical reaction?

Back

Atoms rearrange to form new substances, but the total number of atoms remains the same.

Front

How do you determine if a chemical equation is balanced?

Back

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

Front

What is the mass of products in a chemical reaction if 10g of reactants are used?

Back

The mass of the products will also be 10g, according to the Law of Conservation of Mass.

Front

What is formed when carbon reacts with oxygen?

Back

Carbon monoxide (CO) or carbon dioxide (CO2) can be formed depending on the amount of oxygen available.

Front

How many oxygen atoms are in 2H2O?

Back

There are 2 oxygen atoms in 2H2O.

Front

What is the result of burning wood?

Back

When wood burns, it reacts with oxygen to produce smoke, ash, and gases, while the atoms rearrange.

Front

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

Back

An unbalanced equation has a different number of atoms of one or more elements on each side of the equation.

Front

If 12g of carbon reacts with 16g of oxygen, what is the total mass of carbon monoxide produced?

Back

28g of carbon monoxide (CO) is produced.

Front

What is the significance of balancing chemical equations?

Back

Balancing chemical equations ensures that the Law of Conservation of Mass is upheld, showing that mass is conserved.