Strong or Weak Acids

All acids contain H⁺

• true
• false

How is acidity measured?

• g/dm3
• mol/dm3
• pH
• m/s

Alkalis always contain OH^-

• true
• false

What colour does UI turn in a solution of pH 6?

• Red

• Yellow

• Dark green

• Turquoise

A substance has a pH value of 8. It is most likely to be what?

• Strong acid

• Weak acid

• Strong alkali (base)

• Weak alkali (base)

hydrochloric acid

• strong acid
• weak acid
• strong base
• weak base

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-4

H₂CO₃ / carbonic acid

• strong acid
• weak acid
• strong base
• weak base

H₂SO₄ / sulfuric acid

• strong acid
• weak acid
• strong base
• weak base

ethanoic acid

• strong acid
• weak acid
• strong base
• weak base

What happens to the pH of an acid during neutralisation?

• It stays the same

• It moves toward pH 1

• It moves towards pH 7

• It moves towards pH 14