Test 7 - Acids and Bases

Front

What is pH?

Back

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

Front

What does a low pH indicate about a substance?

Back

A low pH (below 7) indicates that a substance is acidic.

Front

What does a high pH indicate about a substance?

Back

A high pH (above 7) indicates that a substance is basic.

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 an example of a common acid?

Back

Lemon juice is a common acid with a low pH.

Front

What is an example of a common base?

Back

Baking soda (sodium bicarbonate) is a common base with a high pH.

Front

What happens when an acid and a base react?

Back

When an acid and a base react, they undergo a neutralization reaction, producing water and a salt.

Front

What is a salt in chemistry?

Back

A salt is a compound formed from the reaction of an acid and a base, consisting of cations and anions.

Front

What is the taste of acidic foods?

Back

Acidic foods typically have a sour taste.