SOLUTIONS, ACIDS AND BASES

A liquid mixture in which particles can be seen and easily separated by settling or filtration is a ____.

• a.

  solution

• b.

  suspension

• c.

  solvent

• d.

  solute

How is a solute different from a solvent in a solution?

 

• a.

  The solute is present in a smaller amount

• b.

  The solute is present in a greater amount

• c.

  The solute is a solid and the solvent is a liquid

• d.

  The solute is a liquid and the solvent is a gas

   

When you add so much solute that no more dissolves, you have a ____.

• a.

  saturated solution

• b.

  unsaturated solution

• c.

  neutralization

• d.

  suspension

Tags

NGSS.MS-PS1-2

What is one way to increase the solubility of sugar in water?

• a.

  Heat the water

• b.

  Chill the water

• c.

  Increase the amount of sugar

• d.

  Decrease the amount of water

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which is a characteristic property of acids?

• a.

  They turn blue litmus paper red

• b.

  They turn red litmus paper blue

• c.

  They taste bitter

• d.

  They do not react with metals

Acids are described as corrosive because they ____.

• a.

  turn litmus blue

• b.

  taste bitter

• c.

  “eat away” at other materials.

• d.

  feel slippery

   

Tags

NGSS.MS-PS1-2

Which is a likely use for a base?

• a.

  as a vitamin in your food

• b.

  etching metals for printing

   

• c.

  making foods taste sour

   

• d.

  making soaps and detergents

   

In a water solution, how do acids differ from bases?

• a.

  Acids form hydrogen ions (H⁺), while bases form hydroxide ions (OH^–)

• b.

  Acids turn litmus blue, while bases turn litmus red

  (OH^–) do not

   

• c.

  Acids form salts, bust bases do not

   

• d.

  Hydrogen ions (H⁺) remain dissolved, but hydroxide ions (OH^–) do not

   

In water, bases form ____.

• a.

  hydroxide ions

• b.

  hydrogen ions

• c.

  hydrogen gas

• d.

  oxide ions

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The pH scale measures ____.

• a.

  the strength of an acid

• b.

  the strength of hydrogen ions

• c.

  the concentration of hydrogen ions

• d.

  the concentration of an acid