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 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.

Tags

NGSS.MS-PS1-5

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 litmus paper used for?

Back

Litmus paper is used to test the pH of a solution; it turns red in acidic solutions and blue in basic solutions.

Front

What is the relationship between pH and acidity?

Back

The lower the pH, the stronger the acid; a pH of 0-6 indicates increasing acidity.

Front

What is the relationship between pH and basicity?

Back

The higher the pH, the stronger the base; a pH of 8-14 indicates increasing basicity.

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.

Tags

NGSS.MS-PS1-5

Front

What is the role of hydroxide ions (OH-) in a base?

Back

Hydroxide ions (OH-) are responsible for the basic properties of a substance, increasing the pH of a solution.