3.1 Law of Conservation of Mass HW

Front

What is the Law of Conservation of Mass?

Back

The Law of Conservation of Mass states that mass is neither created nor destroyed in a chemical reaction. The total mass of reactants equals the total mass of products.

Front

In a chemical reaction, if the reactant AB has a mass of 12g and product B has a mass of 5g, how much should product A weigh?

Back

7g

Front

If a reaction starts with 20g of reactants, what should be the total mass of the products?

Back

20g

Front

What is mass?

Back

Mass is a measure of the amount of matter in an object, typically measured in grams or kilograms.

Front

Which model best represents the Law of Conservation of Mass?

Back

Model A.

Front

What happens to mass during a chemical reaction?

Back

The total mass remains constant; it is conserved.

Front

What is a reactant?

Back

A reactant is a substance that undergoes a chemical change in a 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

How do you calculate the mass of an unknown product in a reaction?

Back

Subtract the mass of known products from the total mass of reactants.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass.