Mixtures Post Test

A mixture can be created by -

• pouring some water into a glass

• combining two or more materials

• blowing air through a straw

• melting a solid to form a liquid

What tool can be used to easily separate a mixture of iron and plastic paper clips?

• Beaker

• Strainer

• Balance

• Magnet

All of the following are mixtures EXCEPT –

• iron filings and sand

• crushed rock and glass

• glass marbles in a pile

• peanuts and raisins together

How can a student make a sample of sand part of a mixture?

• Place the sample in a closed container and shake it.

• Add gravel to the sand sample and stir them together.

• Pour the sample into a bowl and warm it in sunlight.

• Spread out the sample of sand on a paper towel.

How do we know that a salad is a mixture?

• The salad is made of different types of food

• Bits of the salad can be picked up with a fork

• The salad’s mass can be measured with a balance

• The items in the salad are mostly solid

Tags

NGSS.5-PS1-3