Unit 8: Solutions

What is a substance that is dissolved in another substance? 

• solution
• solute
• solvent
• compound

What is a solvent?

• The substance that does the dissolving in a solution.
• The substance that is being dissolved in a solution.
• The mixing of different substances.
• The process in which neutral molecules lose or gain electrons

In the above picture, a powder is about to be poured into the liquid. Which of the following should be done to make this powder dissolve faster?

• stir the powder in the liquid
• freeze the mixture
• add more powder to the liquid
• store the mixture in a dark place

Tags

NGSS.HS-PS1-5

A solution that is considered dilute would be....

• Dark in color
• Have a strong scent
• Have a large amount of solute
• Have a small amount of solute

Tags

NGSS.HS-PS1-5

At high pressure, gases are

• more soluble

• less soluble

• insoluble

Which of the following increases the rate of dissolving?

• Agitation

• Increasing Temperature

• Decreasing particle size

• All of the above

Which of the following is present in larger quantity in a solution

• Solvent

• Solute

• solution

• Non of the above

As temperature increases, the solubility of solid solute

• increases

• decreases

Tags

NGSS.HS-PS3-4

How does temperature affect the rate of dissolving?

• by increasing the kinetic energy

• by decreasing the particle size

• by increasing collisions between particles

• Both increasing kinetic energy and collisions

A student is dissolving sugar in water to make candy. She notices that sugar lumps are forming at the bottom of the pan. What could she do to help more of the sugar dissolve?

• heat the solution

• cool the solution

• add more sugar to the pan

• take some water out of the pan

Tags

NGSS.HS-PS1-5