Unit 4 Physical Sciences

Front

What is the pH scale?

Back

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

Front

What does a pH of 10 indicate about a substance?

Back

A substance with a pH of 10 is considered a base.

Front

What is an example of a strong base?

Back

Drain cleaner is an example of a strong base, often having a pH close to 14.

Front

What are acids?

Back

Acids are substances that taste sour, can turn blue litmus paper red, and have a pH less than 7.

Front

What is an example of a weak base?

Back

Baking soda is an example of a weak base.

Front

What happens to solutes in warm water?

Back

Solutes dissolve quicker in warm water compared to cold water.

Front

What is the pH of pure water?

Back

The pH of pure water is 7, which is considered neutral.

Front

What is the characteristic taste of acids?

Back

Acids typically have a sour taste.

Front

What is the relationship between pH and acidity?

Back

The lower the pH, the more acidic the solution; the higher the pH, the more basic the solution.

Front

What is a common household acid?

Back

Vinegar is a common household acid, with a pH around 2-3.