3.1 Law of Conservation of Mass HW

Front

What is the Law of Conservation of Mass?

Back

Mass cannot be created nor destroyed, it can only change form.

Front

What happens to the mass of a saltwater mixture when salt is dissolved in water?

Back

The mass of the saltwater mixture is the sum of the mass of the salt and the mass of the water.

Front

If a student dissolves 25 grams of salt in 1,000 grams of water, what is the total mass of the solution?

Back

1,025 grams.

Front

What is mass?

Back

Mass is a measure of the amount of matter in an object.

Front

What is the relationship between mass and chemical reactions?

Back

In a closed system, the total mass remains constant before and after a chemical reaction.

Front

What can happen to particles during a chemical reaction?

Back

Some particles may escape as gases, leading to a decrease in mass.

Front

What is an example of a situation where mass is not conserved?

Back

When a substance is heated in an open container and gases escape.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter, while weight is the force of gravity acting on that mass.

Front

How can mass be measured?

Back

Mass can be measured using a balance scale.

Front

What is the significance of the Law of Conservation of Mass in chemistry?

Back

It helps predict the outcomes of chemical reactions and ensures that mass is accounted for.