Mixtures and Solutions Quiz

When a solid dissolves into a liquid, it becomes a solution. Which of the following mixtures could be separated using a sieve?

• Nuts and raisins

• Salt and pepper

• Salt and gravel

• aluminum nails and iron nails

Which of the following mixtures could be separated by using only evaporation?

• oil and water

• sand and gravel

• water and sugar

• sugar and salt

A student filled two containers with 50 ml of water and added 10 mg of sand to the first one and 10 mg of salt tot he second.

What is the difference between these two mixtures?

• Only mixture 1 begins with a liquid and a solid.

• Only Mixture 2 can be separated with a magnet.

• In Mixture 1 only, the solid will float on the water.

• In Mixture 2 only, the properties of the solid change.

Tags

NGSS.MS-PS1-2

Students created two mixtures. Mixture 1 is different from Mixture 2 because only in Mixture 1 -

• is there any liquid

• was there anything dissolving

• will there remain a solid

• did ingredients stay the same

Tags

NGSS.MS-PS1-2

Which mixture could be separated easily by pouring it through a paper towel?

• Sand and water

• Juice and water

• Milk and water

• Salt and water

Students made two mixtures. Mixture 1 was made by mixing salt into water. Mixture 2 was made by mixing iron filings into sand. How are the mixtures the same? In both mixtures

• by pouring them through a filter

• back to their original ingredients

• using the property of magnetism

• out into a liquid and solid

Which of the following mixtures could be separated with a magnet?

• Aluminum cans and iron cans

• Plastic cups and paper cups

• Wooden blocks and plastic blocks

• Pencil leads and rubber erasers

Tags

NGSS.MS-PS2-5

One group of students mixed salt with warm water. Another group mixed sugar with warm water. How are the mixtures the same? In both mixtures

• the results change color

• the water gets cooler

• the ingredients form layers

• a solid dissolves in the water

Tags

NGSS.MS-PS1-2

A mixture of sugar and water is different from a mixture of sand and water because when the sugar is mixed with the water, the sugar -

• floats on top of the water, but the sand sinks

• can't be removed from water, but sand can

• dissolves in the water, but the sand does not

• can be removed with a magnet, but sand cannot