Modeling Matter -- Chapter 2

If a substance can dissolve in water or it's molecules are attracted to water, we call this ____________.

• Attracted

• Dissolved

• Soluble

• Insoluble

Which of the following experiments did Diego and Maya create, in the book Solving Dissolving, to prove that the sugar did not disappear?

• Chromatography Test

• Evaporation Test

• Boil Test

• Taste Test

Which of the following can happen when you mix a liquid with a solid?

A. The solid doesn't dissolve.

B. The solid only half-way dissolves.

C. The solid will completely dissolve.

• A

• A, C

• A, B, C

• C

Tags

NGSS.MS-PS1-2

Think back to our solubility experiment. The cumin and pepper solid molecules were not attracted to the liquid molecules. Which of the following behaviors did the cumin or pepper molecules demonstrate?

• The solid molecules separated.

• The solid molecules dissolved.

• The solid molecules were clustered together.

• The solid molecules were soluble.

Think back to our solubility experiment. Which of the following solid ingredients were not soluble.

A. Sugar

B. Citric Acid

C. Cumin

D. Pepper

• A, B

• C

• B, C

• C, D

Which of the following is true for two substances that are mixed and have a HIGH attraction?

• They are completely mixed.

• They are slightly mixed.

• They are not mixed at all.

• None of the above.

Tags

NGSS.MS-PS1-2

Think about a cup of sugar water. You know there is sugar in it because it is sweet, but you can't see the sugar.

What test could help you determine whether the sugar is still there?

• Have more students taste the material and collect their observations.

• Add more sugar to the water and observe what happens.

• Weigh the sugar and water separately before they are combined; after they have been combined weigh the solution.

• Mix the sugar with cold water and hot water.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

True or False: You can test solids and see how they react or dissolve in a liquid to determine what the solid is.

• True

• False

Tags

NGSS.MS-PS1-2