WJEC Acids and Bases

What would the pH of water be?

• 1

• 5

• 7

• 9

• 13

What would the pH of sulphuric acid be?

• 1

• 5

• 7

• 9

• 13

What would the pH of sodium hydroxide be?

• 1

• 5

• 7

• 9

• 13

What is the name of a chemical, that changes colour in different pH solutions?

• Acid

• Alkali

• Water

• Indicator

Which one of these is an alkali?

• Sulphuric acid

• Water

• Sodium Chloride

• Sodium hydroxide

Which one of these is an acid?

• Sulphuric acid

• Water

• Sodium Chloride

• Sodium hydroxide

Which one of these is a salt?

• Sulphuric acid

• Water

• Sodium Chloride

• Sodium hydroxide

H⁺(aq) + OH^–(aq) → H₂O(l)... this shows what type of reaction?

• Thermal decomposition

• Physical reaction

• Neutralisation

• Acidification

Which metal is the most reactive?

• Aluminium

• Copper

• Iron

• Zinc

Which metal is the least reactive?

• Aluminium

• Copper

• Iron

• Zinc