Acids and Bases

Question 1

A substance behaves as an acid when it __________ a proton (H+) to a base

Answer 1

Donates

Question 2

A substance behaves as a base when it __________ a proton from an acid

Answer 2

Accepts

Question 3

An ________ ________ involves an exchange of protons from an acid to a base

Answer 3

Acid-base Reaction

Question 4

A ___________________ pair is two species that differ by a proton (H+)

Answer 4

Conjugate Acid-base

Question 5

Some substances can donate or accept protons depending on what they are reacting with

Answer 5

Amphiprotic Substances

Question 6

______________ can donate only one proton

Answer 6

Monoprotic acids

Question 7

__________ __________ can donate more than one proton. The number of hydrogen ions an acid can donate depends on the structure of the acid

Answer 7

Polyprotic acids

Question 8

____________ do not donate all of their protons at once, they do so in steps when reacting with a base

Answer 8

Polyprotic acids

Question 9

___________ can donate two protons (eg: sulphuric acid (H2SO4) and carbonic acid (H2CO3)

Answer 9

Diprotic acids

Question 10

____________ can donate three protons (eg: phosphoric acid (H3PO4) and boric acid (H3BO3)

Answer 10

Triprotic acids

Question 11

____________ donate protons easily and ionise completely in water

Answer 11

Strong acids

Question 12

________ only partly ionise to form hydrogen ions in water

Answer 12

Weak acids

Question 13

__________ accept protons easily

Answer 13

Strong bases

Question 14

__________ partially ionise in water to make hydroxide ions

Answer 14

Weak bases

Question 15

Relative strength of conjugate acid-base pairs

Answer 15

• The stronger an acid, the weaker is its conjugate base.
• The stronger a base, the weaker is its conjugate acid