acids and bases

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 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 of lemon juice?

Back

Lemon juice has a pH of around 2, making it a strong acid.

Front

What is the pH of baking soda?

Back

Baking soda has a pH of around 9, making it a weak base.

Front

What is the pH of bleach?

Back

Bleach has a pH of around 12-13, making it a strong base.

Front

What is a neutral substance?

Back

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

Front

How does the pH scale work?

Back

Each whole number change on the pH scale represents a tenfold change in acidity or basicity.

Front

What is the strongest acid on the pH scale?

Back

The strongest acid has a pH of 0, while a pH of 1 is also very acidic.

Front

What is ocean water's typical pH?

Back

Ocean water is slightly basic, typically having a pH around 8.