Exploring Acid-Base Reactions with Red Cabbage

What must you obtain before attempting the lab experiment at home?

• Online certification

• Teacher's permission

• School's permission

• Parent or guardian approval

Which of the following is NOT a safe chemical to use in the home lab experiment?

• Soap

• Baking soda

• Bleach

• Vinegar

What natural substance is used as a pH indicator in the experiment?

• Beetroot juice

• Carrot extract

• Cabbage juice

• Tomato juice

What color does cabbage juice turn when mixed with a strong acid?

• Green

• Blue

• Red

• Yellow

Which of the following is a strong base used in the experiment?

• Vinegar

• Lemon juice

• Seltzer water

• Sodium hydroxide

Which type of soil results in blue hydrangea flowers?

• Basic soil

• Acidic soil

• Dry soil

• Neutral soil

What is the pH range of an acidic solution?

• 0 to 7

• 7 to 14

• 0 to 14

• None of the above

What color does litmus paper turn when it comes into contact with a base?

• Blue

• No change

• Yellow

• Red

What does the presence of a hydroxide group (OH) in a chemical formula indicate?

• It is an acid

• It is a gas

• It is a base

• It is neutral

Which chemical starts with an 'H' and is considered an acid?

• NaOH

• HCl

• CaCO3

• KOH