A)Which substance is an example of a nonpolar compound?(1 point)

Question

Responses

vegetable oil
vegetable oil

food coloring
food coloring

sugar
sugar

water
water
Question 2
A)Which option is a microscopic property that helps determine whether or not two substances will dissolve with each other? (1 point)
Responses

state of matter
state of matter

polarity
polarity

volume
volume

molecular mass
molecular mass
Question 3
A)
Use the graph to answer the question.

A line graph depicts the variation of the solubility of oxygen in water with temperature. The vertical axis is labeled, solubility (grams of oxygen per 100 g H2O), and ranges from 0.0010 to 0.0070 in increments of 0.0010. The horizontal axis is labeled, temperature (degree C), and ranges from 0 to 100 in increments of 10. The line for solubility slopes downward from a point on the vertical axis just below 0.0070, first with a higher slope and then with a smaller slope and moves to the point (100, 0) on the horizontal axis.

Which statement is the best explanation for the graph?

(1 point)
Responses

As temperature rises, the space between liquid particles increases, allowing more room for gas particles.
As temperature rises, the space between liquid particles increases, allowing more room for gas particles.

As temperature rises, the space between liquid particles decreases, leaving less room for gas particles.
As temperature rises, the space between liquid particles decreases, leaving less room for gas particles.

As temperature rises, gas particles are moving faster and are more likely to enter the solution.
As temperature rises, gas particles are moving faster and are more likely to enter the solution.

As temperature rises, gas particles are moving faster and may leave the solution.
As temperature rises, gas particles are moving faster and may leave the solution.
Question 4
A)A mother finds her daughter’s mug of hot cocoa on a table an hour after she had been drinking it. As the mother pours out the cocoa, she sees brown solids in the bottom of the mug. How can this be explained?(1 point)
Responses

The cocoa was mixed with hot water, but some cocoa settled as it cooled because the solubility went down.
The cocoa was mixed with hot water, but some cocoa settled as it cooled because the solubility went down.

This would only happen if too much cocoa powder was added in the first place, because the solubility should not change.
This would only happen if too much cocoa powder was added in the first place, because the solubility should not change.

The cocoa was mixed with hot water, but some cocoa settled as it cooled because the solubility went up.
The cocoa was mixed with hot water, but some cocoa settled as it cooled because the solubility went up.

All dissolved substances will come out of solution over time. If the mother waits long enough, then all of the powder will appear at the bottom of the mug.
All dissolved substances will come out of solution over time. If the mother waits long enough, then all of the powder will appear at the bottom of the mug.
Question 5
A)After which action would the concentration of a solution remain constant?(1 point)
Responses

adding water to the solution
adding water to the solution

evaporating water from the container
evaporating water from the container

adding solute to the solution
adding solute to the solution

removing solution from the container

Answer 1

Here are the answers to your questions:

Question 1: A) Which substance is an example of a nonpolar compound?

• Response: vegetable oil

Question 2: A) Which option is a microscopic property that helps determine whether or not two substances will dissolve with each other?

• Response: polarity

Question 3: A) Which statement is the best explanation for the graph?

• Response: As temperature rises, gas particles are moving faster and may leave the solution.

Question 4: A) How can the presence of brown solids in the bottom of the mug of hot cocoa be explained?

• Response: The cocoa was mixed with hot water, but some cocoa settled as it cooled because the solubility went down.

Question 5: A) After which action would the concentration of a solution remain constant?

• Response: adding solute to the solution

If you have any further questions or need additional explanations, feel free to ask!