Unit 2 Science Review

What is matter?

• something that can be seen and touched

• something that keeps its size and shape

• something that takes up space and has mass

Some leaves feel scratchy or prickly.

What property describes how they feel?

• toughness

• texture

• flexibility

What are ways to observe a toy car?

Select EACH correct answer.

• Look at the toy car.

• Listen to sounds from the toy car.

• Touch different parts of the toy car.

• Think about the toy car.

Which are examples of a solid?

• red, blue and green

• water, milk and tea

• rocks, sand, and soil

Which material matches the properties?

soft and flexible, but tough

• glass

• metal

• cotton

• paper

Which material matches the properties?

clear, sturdy, and hard

• glass

• metal

• cotton

• paper

What characteristics compare a hippopotamus and a ladybug?

• very large and wide mouth

• very small and tiny mouth

• has a head and body

What BEST describes a bicycle?

• one part made of metal

• two parts, both round and made of rubber

• many parts, all made of metal

• many parts made of many materials

What does a bicycle, scissors, clock, and lawn mower have in common?

• They have parts that move.

• They are parts that are made of rubber.

• They are parts that make noise.

• They are parts with sharp edges.

What changes can occur when matter is heated?

• solid to liquid

• liquid to solid

• liquid to gas

• gas to liquid