Acids and bases Practice Regents

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 pH?

Back

pH is a measure of the acidity or basicity of a solution, on a scale from 0 to 14.

Front

What is a neutralization reaction?

Back

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

Front

What is the pH of pure water?

Back

The pH of pure water is 7, which is considered neutral.

Front

What is the role of litmus paper in determining pH?

Back

Litmus paper is used to test the acidity or basicity of a solution; blue litmus turns red in acidic solutions, and red litmus turns blue in basic solutions.

Front

What is the formula for calculating molarity (M)?

Back

Molarity (M) = moles of solute / liters of solution.

Front

What is the relationship between strong acids and their dissociation in water?

Back

Strong acids completely dissociate in water, releasing all their protons.

Front

What is the relationship between strong bases and their dissociation in water?

Back

Strong bases completely dissociate in water, releasing hydroxide ions.

Front

How does the concentration of ions affect electrical conductivity in solutions?

Back

Higher concentrations of ions in a solution increase its electrical conductivity.