Solutions Acids and Bases Review

Borax detergent is dissolved in water. The solution turns red litmus paper blue and feels slippery to the touch. Which pH is possible for the solution?

• 1.5

• 5.0

• 7.0

• 9.5

Tags

NGSS.MS-PS1-2

Which substance will dissolve in water to produce H3O+ (hydronium ion) as the only positive ion in solution?

• an acid

• a base

• water

• a salt

Two clear solutions are placed in separate beakers. The first solution has a pH of 4, and the pH of the second solution is unknown. If the two solutions are mixed and the resulting pH is 5, the second solution must have …

• a higher concentration of H+ ions

• more dissolved salt (NaCl) particles

• a lower temperature

• a higher concentration of OH- ions

Tags

NGSS.MS-PS1-2

Which best describes the result when the concentration of a solution is decreased?

• The amount of solute is increased, and the conductivity of the solution is decreased

• The amount of solute is increased, and the conductivity of the solution is increased

• The amount of the solute is decreased, and the conductivity of the solution is decreased.

• The amount of solute is decreased, and the conductivity of the solution is increased.

Which is the correct set of base properties?

• sweet taste, slippery, changes litmus from blue to red

• bitter taste, slippery, change litmus from red to blue

• sour taste, corrosive, change litmus from blue to red

• sour taste, corrosive, change litmus from red to blue

Which is the correct set of acid properties?

• sweet taste, slippery, changes litmus from blue to red

• bitter taste, slippery, change litmus from red to blue

• sour taste, corrosive, change litmus from blue to red

• sour taste, corrosive, change litmus from red to blue

In the lab situation shown in the table, what color should litmus paper turn when placed in liquid dishwashing detergent?

• red

• blue

• colorless

• pink

Tags

NGSS.MS-PS1-2

Which substance is the weakest acid on the pH scale?

• ammonia

• lye

• baking soda

• milk

Which of the following are properties common to strong bases?

• I and III

• II and IV

• III and IV

• I and II

Tags

NGSS.MS-PS1-5

What is the pH range of an acidic solution?

• 0 to 7

• 7 to 14

• 7

• 14