Acids and Bases

Front

What is an acid?

Back

An acid is a substance that donates protons (H+) in a solution and has a pH less than 7.

Front

What is a base?

Back

A base is a substance that accepts protons (H+) or donates hydroxide ions (OH-) in a solution and has a pH greater than 7.

Front

What is the pH scale?

Back

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

Front

What is acid rain?

Back

Acid rain is precipitation that has a pH lower than 5.6, often caused by pollution.

Front

What is a neutral solution?

Back

A neutral solution has a pH of 7, meaning it is neither acidic nor basic.

Front

What is the property of bases related to taste?

Back

Most bases taste bitter.

Front

What is a common indicator used to test pH?

Back

Litmus paper is a common indicator that turns red in acidic solutions and blue in basic solutions.

Front

What is the effect of acids on litmus paper?

Back

Acids turn blue litmus paper red.

Front

What is the effect of bases on litmus paper?

Back

Bases turn red litmus paper blue.

Front

What is a strong acid?

Back

A strong acid is one that completely dissociates in water, releasing all of its hydrogen ions.