Modeling Matter Ch 3

In chromatography, the food dye separated into different colors because

• the molecules shape.

• the molecules weight.

• the molecules size.

• none of the above.

If a solid dissolves in a liquid it is

• soluble

• solid

• substance

• sediment

All liquid mixtures stay mixed and never seperate

• True

• False

An emulsifier...

• does not attract molecules

• attracts the molecules of two liquids that DO mix

• attracts the molecules of two liquids that DO NOT mix

Look at the image, how would you describe the attraction between molecules 1 and 6

• low

• high

Do molecules 1 and 6 need an emulsifier?

• yes

• no

Tags

NGSS.MS-PS1-1

Which two liquids need an emulsifier?

• milk and water

• citric acid and water

• oil and vinegar

• all liquids

How would you describe the attraction between molecules 2 and 5

• LOW because molecules 2 and 5 are NOT attracting and sticking together.

• HIGH because molecules 2 and 5 are NOT attracting and sticking together.

• LOW because molecules 2 and 5 are attracting and sticking together.

Tags

NGSS.MS-PS2-1

Do molecules 2 and 5 need an emulsifier?

• yes

• no

Tags

NGSS.MS-PS1-1

Julia is looking for examples of substances that will dissolve in water. She experiments with some things she finds in her kitchen at home. Which of these will NOT dissolve in water?

• salt
• sugar
• pepper
• coffee