CH 7: Solutions, Acids, and Bases

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 does a pH of 7 indicate?

Back

A pH of 7 indicates a neutral solution, meaning it is neither acidic nor 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 a homogeneous mixture?

Back

A homogeneous mixture is a mixture that has a uniform composition throughout, such as saltwater.

Front

What is a heterogeneous mixture?

Back

A heterogeneous mixture is a mixture that is not uniform in composition, such as salad or beach sand.

Front

What is a colloid?

Back

A colloid is a mixture where tiny particles are dispersed throughout a medium but do not settle out, like milk.

Front

What is the role of indicators in chemistry?

Back

Indicators are substances that change color in response to changes in pH, helping to determine the acidity or basicity of a solution.

Front

What is the difference between strong and weak acids?

Back

Strong acids completely dissociate in water, while weak acids only partially dissociate.

Front

What is neutralization?

Back

Neutralization is a chemical reaction between an acid and a base that produces water and a salt.