Science 7 Reviewer

What do we call anything that occupies space and has mass?

• Gas

• Liquid

• Matter

• Solid

What state of matter is characterized by having a definite shape and a definite volume?

• Gas

• Liquid

• Solid

• Plasma

Why do scientists use models?

• They are exact representations of reality.

• They only exist in computer simulations.

• They are always simple and easy to understand.

• They can be used to test ideas and make predictions

What substance is cannot be broken down into simpler substances by chemical reactions?

• compound

• element

• molecule

• nucleus

What object is consist of two or more atoms that chemically bonded together?

• nucleus

• molecules

• particles

• solid

Which of the following states of matter has particles arranged most closely together?

• Solid

• Liquid

• Gas

• All of the above

What do you call the process of changing a solid into liquid by heating it?

• Melting

• Freezing

• Evaporation

• Condensation

In which state of matter do particles have the most freedom of movement?

• Solid

• Liquid

• Gas

• All of the above have the same freedom of movement.

What can be a limitation of scientific model?

• They are never updated or improved.

• They are only used in physics, not other sciences.

• They are all based on real-world data.

• They cannot perfectly capture all the complexities of a system

What process is involved in everyday fog formation?

• Melting

• Boiling

• Evaporation

• Condensation