Unit 1 Chemical Reactions Test Review

Front

In a closed system, what happens to the mass during a chemical reaction?

Back

The mass stays the same.

Front

What are the defining characteristics of a solid state of matter?

Back

A solid has a definite volume and a definite shape.

Front

What type of change occurs when a new substance is created?

Back

A chemical change.

Front

Does this equation follow the Law of Conservation of Mass: Reactants = Products?

Back

TRUE.

Front

How do particles in a liquid behave?

Back

Particles of a liquid are free to move in a container but are in close contact with one another.

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.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change does not create a new substance, while a chemical change does.

Front

What is an example of a chemical reaction?

Back

Burning wood, which produces ash and gases.

Front

What happens to the particles in a solid when heated?

Back

They gain energy and may begin to vibrate more, potentially changing to a liquid state.

Front

What is the state of matter with a definite volume but no definite shape?

Back

Liquid.