Review - Acids, Bases and Indicators

Bases have a pH that is:

• less than 7

• equal to 7

• greater than 7

• None of the above

Acids have a pH that is:

• less than 7

• equal to 7

• greater than 7

• None of the above

Neutral solutions have a pH that is:

• less than 7

• equal to 7

• greater than 7

• None of the above

The characteristic ion of bases is:

• sodium ion (Na⁺)

• carbonate ion (CO₃²⁻)

• hydrogen ion (H⁺)

• hydroxide ion (OH⁻)

The characteristic ion of acids is:

• phosphate ion (PO₄³⁻)

• carbonate ion (CO₃²⁻)

• hydrogen ion (H⁺)

• hydroxide ion (OH⁻)

Bases taste:

• Sweet

• Bitter

• Sour

• Salty

Acids taste:

• Sweet

• Bitter

• Sour

• Salty

A substance is classified as an electrolyte because

• it has a high melting point

• it contains covalent bonds

• its aqueous solution conducts an electric current

• its aqueous solution has a pH value of 7

Which substance is an electrolyte?

• CCl₄

• C₂H₆

• HCl

• H₂O

Which compound is a base?

• HCl

• H₃PO₄

• Ca(OH)₂

• CH₃COOH