Acids & Bases Test Review 2025

Front

What is an acidic solution?

Back

An acidic solution is one that has a greater concentration of hydrogen ions [H⁺] compared to hydroxide ions [OH⁻].

Front

What is a basic solution?

Back

A basic solution is one that has a greater concentration of hydroxide ions [OH⁻] compared to hydrogen ions [H⁺].

Front

What is the relationship between acids and protons?

Back

A hydrogen ion (H⁺) is equivalent to a proton; thus, acids can be defined as substances that donate protons in a solution.

Front

What is the pH scale?

Back

The pH scale measures the acidity or basicity of a solution, ranging from 0 (strongly acidic) to 14 (strongly basic), with 7 being neutral.

Front

What defines a strong acid?

Back

A strong acid is one that completely dissociates in water, releasing all of its hydrogen ions.

Front

What defines a weak acid?

Back

A weak acid is one that partially dissociates in water, resulting in a lower concentration of hydrogen ions.

Front

What is the Arrhenius definition of acids?

Back

According to the Arrhenius definition, an acid is a substance that increases the concentration of hydrogen ions [H⁺] in aqueous solution.

Front

What is the Bronsted-Lowry definition of acids?

Back

The Bronsted-Lowry definition states that an acid is a proton donor, while a base is a proton acceptor.

Front

What is hydronium ion [H₃O⁺]?

Back

The hydronium ion [H₃O⁺] is formed when a hydrogen ion (H⁺) combines with a water molecule (H₂O).

Front

How do acids affect pH paper?

Back

Acids change the color of pH paper to indicate a low pH, typically red or orange, depending on the strength of the acid.