Understanding Litmus as an Indicator

What is litmus paper used for?

• To determine the density of a solution.

• To measure temperature of liquids.

• To identify the color of a solution.

• Litmus paper is used to test pH levels of solutions.

What color does litmus paper turn in acidic solutions?

• Blue

• Green

• Yellow

• Red

What color does litmus paper turn in basic solutions?

• Red

• Green

• Blue

• Yellow

Why is litmus considered a pH indicator?

• Litmus is a solid that dissolves in water to form a gas.

• Litmus is a type of acid that neutralizes bases.

• Litmus is used to measure temperature changes in solutions.

• Litmus is considered a pH indicator because it changes color in response to the acidity or alkalinity of a solution.

Can litmus paper be used to measure the exact pH of a solution?

• Yes, litmus paper can measure exact pH values.

• No, litmus paper cannot be used to measure the exact pH of a solution.

• Litmus paper provides a numerical pH reading.

• Litmus paper can only indicate if a solution is acidic or basic.