Conservation of Mass

Front

What does the Law of Conservation of Mass state?

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

How does heating a gas in a balloon affect its mass?

Back

Heating a gas in a balloon causes the gas to expand, but the mass of the gas remains the same.

Front

If a chemical reaction starts with 50g of reactants, what is the total mass of the products?

Back

The total mass of the products will also be 50g, according to the Law of Conservation of Mass.

Front

In a reaction where 10g of substance A reacts with 15g of substance B, what is the total mass of the products?

Back

The total mass of the products will be 25g, as mass is conserved.

Front

What is the mass of water produced when 32g of oxygen reacts with 8g of hydrogen?

Back

The mass of water produced will be 40g.

Front

If a balloon filled with air is taken from a cold room to a warm room, what happens to the volume of the balloon?

Back

The volume of the balloon increases as the air inside warms up and expands, but the mass remains constant.

Front

What is the relationship between reactants and products in a chemical reaction?

Back

The total mass of the reactants must equal the total mass of the products.

Front

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

Back

To find the mass of an unknown product, subtract the mass of known products from the total mass of the reactants.

Front

What happens to the mass of ice cubes when they melt in water?

Back

The mass of the ice cubes remains the same when they melt; the total mass of the water remains constant.

Front

If a student weighs a glass of water and finds it to be 12 ounces, what will be the weight after adding 6 ice cubes weighing 1 ounce each?

Back

The total weight will be 18 ounces after the ice cubes melt.