Exploring the Law of Conservation of Mass in Chemical Reactions

What is the main idea behind the law of conservation of mass?

• Matter can be created or destroyed in a chemical reaction.

• Energy cannot be created or destroyed in a chemical reaction.

• Matter cannot be created or destroyed in a chemical reaction.

• Energy can be created or destroyed in a chemical reaction.

Tags

NGSS.MS-PS1-5

In the given example, what are the reactants involved in the chemical reaction?

• Methane and oxygen

• Oxygen and water vapor

• Methane and carbon dioxide

• Carbon dioxide and water vapor

Tags

NGSS.MS-PS1-5

How many grams of methane are placed in the closed container?

• 36 grams

• 44 grams

• 64 grams

• 16 grams

Tags

NGSS.HS-PS1-7

What is the mass of oxygen placed in the closed container?

• 16 grams

• 64 grams

• 44 grams

• 36 grams

According to the law of conservation of mass, what should be the total mass of the products if the total mass of the reactants is 80 grams?

• 64 grams

• 80 grams

• 36 grams

• 44 grams

Tags

NGSS.MS-PS1-5

If 44 grams of carbon dioxide are produced, how many grams of water should be expected?

• 44 grams

• 36 grams

• 64 grams

• 16 grams

Tags

NGSS.MS-PS1-5

In the example, what is the total mass of the reactants?

• 16 grams

• 64 grams

• 44 grams

• 80 grams

Tags

NGSS.MS-PS1-5

What happens to the atoms during a chemical reaction?

• They rearrange themselves.

• They are created.

• They are destroyed.

• They disappear.

Tags

NGSS.MS-PS1-5

What is the only way to change the total mass in a closed system?

• By removing mass from the chamber

• By changing the pressure

• By changing the temperature

• By adding more mass into the chamber

Tags

NGSS.MS-PS1-5

What is the main idea emphasized in the conclusion?

• The total mass changes in a closed system.

• The total mass remains the same in a closed system.

• Matter can be created in a chemical reaction.

• Matter can be destroyed in a chemical reaction.

Tags

NGSS.MS-PS1-5