Science Second Quarter Review

1. Students want to determine the volume of a rock. They place 60 mL of water in a container and add the rock. By calculating the change in the water level, they estimate that the rock has a volume of about 8 ml. Which characteristic of the rock is measured by the markings on the container?

• How much matter it contains

• How much the container weighs

• The amount of gravity puling on it

• the amount of potential energy in it

Which of the following tools is necessary to measure displacement?

• Graduated Cylinder

• Triple Beam Balance

• Hot Plate

• Microscope

Which is an example of melting?

• Flowing water making a rock smooth

• A carrot becoming soft when cooked

• Sugar mixed into tea making the tea sweet

• Butter changing into liquid in a warm pan

How does physical change differ from chemical change?

• properties of matter are observed

• new materials are produced

• change involves heat and light

• the matter is unchanged

Tell if the statement is an inference or observation.

The plant grew from a seed.

• Inference

• observation

Tell if the statement is observation or an inference.

The plant has flowers

• Inference

• observation

True or False

A change in size or shape is a physical change.

• true

• false

True or False.

An example of a chemical change is when water freezes.

• true

• false

True or False.

A chemical change means a new substance with new properties was formed.

• true

• false

True or False.

A nail rusting is a physical change.

• true

• false