National 5 Chemistry - Unit 1 - Acids and Bases

Which ion determines a base?

• H⁺
• OH^-
• OH⁺
• CO_3^2-

What is the pH of an extremely strong acid?

• pH 0
• pH 7
• pH 13
• pH 2

Solutions that have more OH– ions than H+ ions are

• acids

• bases

• enzymes

• neutral

Solutions that have more H+ ions than OH- ions are

• acids

• bases

• enzymes

• neutral

Which has a pH below 7?

• Acid
• Base

Acids react with

• water to produce bases and salts
• salts to produce bases and water
• neither bases, salts nor water
• bases to produce salts and water

Tags

NGSS.MS-PS1-2

What other laboratory substance can you use to test if colourless substance is an acid or an alkali?

• Catalyst

• Salt

• Universal Indicator

• Water

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

What salt is produced if you react sodium hydroxide with hydrochloric acid?

• sodium hydroxide
• sodium sulfate
• sodium nitrate
• sodium chloride

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A salt is formed when nitric acid combines with sodium hydroxide. What is the name of the salt?

• Sodium chloride
• Sodium nitrate
• Hydrogen Nitrate
• Nirate