Which of the following substances contain acid?

• An orange
• Bleach
• Distilled water
• Washing powder

Which of the following substances contain an alkali?

• Baking powder
• Coca cola
• Distilled water
• Vinegar

Which of the following pH numbers indicates a neutral substance?

• 1
• 5
• 7
• 14

Which of the following pH numbers indicates a strong acid?

• 1
• 5
• 7
• 14

Which of the following pH numbers indicate a strong alkali?

• 1
• 5
• 7
• 14

What is the pH of pure water?

• pH 7
• pH 3
• pH 12
• pH 8

What two substance are formed when an acid and alkali react together in equal amounts?

• Salt and water
• Alkali and water
• Acid and water
• Acid and alkali

What substance could you use to test if a substance is an acid or alkali?

• Indicator
• Salt
• Catalyst
• Water

When found in food, acids are ________

• Sour
• Bitter
• Salty
• Slippery

When dissolved in water, acids produce:

• bases
• salts
•  hydrogen (H⁺) ions
•  hydroxide (OH^-) ions