SPS6de Acids, Bases, & pH Scale

Front

What is the pH scale?

Back

The pH scale measures how acidic or basic a substance is, ranging from 0 (very acidic) to 14 (very basic), with 7 being neutral.

Front

What pH value indicates an acid?

Back

A pH value less than 7 indicates an acid.

Front

What pH value indicates a base?

Back

A pH value greater than 7 indicates a base.

Front

What is a neutral pH value?

Back

A neutral pH value is 7, which is neither acidic nor basic.

Front

What is an example of a weak acid?

Back

An example of a weak acid is milk, which has a pH around 6.5.

Front

What is an example of a strong acid?

Back

An example of a strong acid is hydrochloric acid (HCl), which has a pH close to 0.

Front

What is an example of a weak base?

Back

An example of a weak base is baking soda, which has a pH around 8.4.

Front

What is an example of a strong base?

Back

An example of a strong base is sodium hydroxide (NaOH), which has a pH close to 14.

Front

What does a litmus test indicate?

Back

A litmus test indicates whether a substance is acidic or basic based on color change of litmus paper.

Front

What color does litmus paper turn in an acid?

Back

Litmus paper turns red in an acidic solution.