Conservation of Mass (Crash Course & BrainPOP)

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; it remains constant.

Front

What is a chemical change?

Back

A chemical change is a process where one or more substances are transformed into new substances with different properties.

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.

Front

Can a chemical change be reversed?

Back

Chemical changes are usually irreversible, meaning the original substances cannot be easily recovered.

Front

Can a physical change be reversed?

Back

Yes, physical changes are often reversible, allowing the original substance to be recovered.

Front

What is an example of a chemical change?

Back

Burning wood is an example of a chemical change, as it produces ash and smoke, which are new substances.

Front

What is an example of a physical change?

Back

Melting ice is an example of a physical change, as it changes from solid to liquid but remains water.

Front

What happens to water when it evaporates?

Back

When water evaporates, it turns into water vapor (gas) and mixes with the air.

Front

What is mass?

Back

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

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.