Turmeric Indicator Activity Concepts

The video tutorial demonstrates an activity using turmeric as a natural indicator to test the acidity or basicity of substances. The teacher prepares a turmeric paste and applies it to paper, which is then tested with lemon juice and detergent solution. The turmeric paper turns yellow with acidic lemon juice and reddish-brown with basic detergent solution, illustrating the color change properties of turmeric as an indicator.

What is the primary purpose of the turmeric card activity?

• To measure the temperature of substances

• To create a colorful art piece

• To determine if substances are acidic or basic

• To test the color of turmeric

Which materials are required for the turmeric indicator activity?

• Turmeric powder, vinegar, salt

• Turmeric powder, sugar, water

• Turmeric powder, oil, baking soda

• Turmeric powder, detergent, lemon

How is the turmeric paste prepared?

• By adding water to turmeric powder

• By heating turmeric powder

• By mixing turmeric powder with vinegar

• By mixing turmeric powder with oil

What is used to apply the turmeric paste on paper?

• A spoon

• A paintbrush or cotton

• A knife

• A sponge

What is the purpose of preparing a detergent solution?

• To clean the turmeric paper

• To test the basicity of substances

• To add fragrance to the paper

• To make the paper waterproof

What happens to turmeric paper when lemon juice is applied?

• It remains yellow

• It turns green

• It turns blue

• It turns red

What does the color change indicate when lemon juice is applied to turmeric paper?

• The presence of oil

• The presence of an acid

• The presence of a base

• The presence of water

What color does the turmeric paper turn when a basic solution is applied?

• Yellow

• Reddish-brown

• Green

• Blue

What does the reddish-brown color indicate on turmeric paper?

• The presence of an acid

• The presence of a base

• The presence of water

• The presence of sugar

What is the conclusion of the turmeric indicator activity?

• Turmeric paper turns yellow with bases

• Turmeric paper turns green with acids

• Turmeric paper turns reddish-brown with bases

• Turmeric paper turns blue with acids