Physical Science

A concentrated solution of a base and water contains

• a strong base

• a strong base and a weak acid

• a weak base

• either A or C

A change of 1 on the pH scale indicates that a substance has either double or half the amount of hydrogen ions

• True

• False

A neutral solution has a pH value of ___________.

• 0

• 7

• 8

• 10

A pH of 4 is more acidic than a pH of 5

• True

• False

A substance that turns blue litmus red and reacts with metals would most likely be a(n) _____________.

Acidic foods usually tase _____________.

Basic foods usually taste

You should never taste any chemical in a laboratory to determine whether it is an acid or a base.

• True

• False

Aqueous solutions are solutions

• that produce hydronium ions

• that produce hydroxide ions

• where any liquid is the solvent

• where water is the solvent

Which type of solutions conduct electricity?

• acidic

• basic

• both A and B

• neither A nor B