Unit 10 Review

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

As the temperature decreases the solubility of a gas in a liquid

• increases
• decreases

Water molecules are attracted to each other because

• They are all positively charged
• Each water molecule has the same number of protons as electrons
• The positive area of one water molecule is attracted to the negative area of another
• All water molecules are neutral

Tags

NGSS.MS-PS2-3

At 30'C, which substance has the lowest solubility?

• KNO3

• KBr

• NaCl

• Yb2(SO4)3

Tags

NGSS.MS-PS1-4

NGSS.MS-PS1-2

A soluble substance:

• will not dissolve in water

• will dissolve in water

• is only an electrolyte

A substance that dissolves in solution and produces ions is:

• electrolyte

• non-electrolyte

• a solvent

Tags

NGSS.MS-PS1-1

Water is polar, this means:

• both the H and O are negative

• the O is slightly negative and the H's are slightly positive

• water will dissolve oil

• hydrogen is slightly negative

How does temperature affect the rate of dissolution?

• Temperature affects the rate of dissolution by increasing or decreasing the kinetic energy of the solvent molecules, which affects the frequency of collisions with the solute.

• Temperature decreases the frequency of collisions between solvent and solute

• Temperature only affects the solute, not the solvent

• Temperature has no effect on the rate of dissolution

Tags

NGSS.HS-PS1-5

What is the impact of stirring on the rate of dissolution?

• Stirring causes the substance to solidify instead of dissolve.

• Stirring decreases the rate of dissolution.

• Stirring increases the rate of dissolution.

• Stirring has no impact on the rate of dissolution.