Science and Doomsday Method Quiz

What is the first magical color that appears in the chameleon potion?

• Green

• Sky blue

• Golden Yellow

• Brown

In the chameleon reaction, which substance acts as a reducing agent?

• Potassium permanganate

• Sodium hydroxide

• Sugar

• Water

What type of reaction is the chameleon reaction?

• Color reaction

• Redox reaction

• Acid-base reaction

• Precipitation reaction

What happens to the solution when you shake the bottle in the Blue Bottle Experiment?

• It stays colorless

• It turns blue

• It turns green

• It forms bubbles

Which ingredient removes oxygen from the solution, causing the blue dye to turn colorless?

• Methylene blue

• Sodium hydroxide

• Glucose

• Water

What causes the blue color to come back when you shake the bottle in the Blue Bottle Experiment?

• Adding glucose

• Removing oxygen

• Bringing back oxygen

• Adding more methylene blue

What type of reaction occurs when vinegar turns turmeric paper back to yellow?

• Neutralization reaction

• Redox reaction

• Precipitation reaction

• Combustion reaction

What is the natural compound in turmeric that reacts with acids and bases?

• Curcumin

• Vinegar

• Baking soda

• Sodium hydroxide

What happens when you draw on turmeric paper with a baking soda solution?

• The drawing turns red or brown

• The drawing turns blue

• The drawing stays yellow

• The paper dissolves

How can you erase the base-drawn message from turmeric paper?

• Add more baking soda

• Use water

• Dab vinegar on the paper

• Heat the paper