Unit 4.2 Solutions and Acids Test Modified

Which of the following would conduct electricity?

• solid calcium chloride

• solid aluminum

• calcium chloride dissolved in water

• both A & C

• both B & C

It is easier to stir sugar into iced tea when the tea is hot rather than when it is cold. This is because

• the tea is more viscous when it is cold.

• the tea is more viscous when it is hot.

• the solubility of the sugar decreases with temperature.

• the solubility of the sugar increases with temperature.

Which solution has the greatest concentration of solute?

• 1:10

• 1:100

• 1:1000

• They all have the same concentration.

Which of the solutions on the right has a higher molarity?

• Solution 1

• Solution 2

• They both have the same molarity.

• There is no way to know.

Which of the following is a characteristic of a strong acid?

• completely dissociates in water

• has a pH close to 7

• partially dissociates in water

• feels slippery to touch

What is the pH of a neutral solution?

• 1

• 14

• 7

• 0

Which substance is the solvent in a saltwater solution?

• salt

• Na⁺ and Cl⁻ ions

• water

• none of the above

Which of the following are properties of an acid?

• sour taste, changes litmus from red to blue.

• sour taste, changes litmus from blue to red.

• bitter taste, slippery, changes litmus from blue to red.

• bitter taste, slippery, changes litmus from red to blue.

In the reaction above, the Cl⁻ is the

• acid

• conjugate acid

• base

• conjugate base

A solution with a [OH⁻] of 1.58 x 10⁻⁵ would be a(n)

• acid.

• base.

• neutral solution.