3rd grade - Science

What is a mixture?

• A material made of only one thing

• A combination of two or more materials

• A type of liquid

In a mixture, each material...

• Changes its shape and color

• Disappears completely

• Keeps its own properties

Which of these is an example of a mixture?

• A glass of water

• A salad with vegetables

• A plain sandwich

What states can materials in a mixture be in?

• Only solid

• Solid, liquid, or gas

• Only gas

In seawater, what can you NOT see?

• The sand

• The water

• The salt

What is dissolved in soft drinks?

• Rice

• Carbon dioxide

• Pepper

How can we separate a mixture of solids?

• With a spoon

• With a sieve or a magnet

• With a thermometer

What tool separates smaller solids from larger solids?

• Filter

• Sieve

• Funnel

How does a magnet help in separating mixtures?

• It melts the materials

• It mixes materials together

• It attracts iron or magnetic materials

What tool is used to separate a solid from a liquid?

• Magnet

• Filter

• Ruler