Match the following.

1. a positively charged ion; an atom which has lost an electron cation

2. a negatively charged ion; an atom which has gained an electron pH

3. the compound formed by the ionic bonding of a cation and anion salt

4. a measure of the hydrogen ion concentration in a solution anion

PH is the measure of hydrogen ions

A positive ion is a cation

A negative ion is an anion

1. a positively charged ion; an atom which has lost an electron - cation

2. a negatively charged ion; an atom which has gained an electron - anion

3. the compound formed by the ionic bonding of a cation and anion - salt

4. a measure of the hydrogen ion concentration in a solution - pH

Explanation:

A normal atom has no charge or neutral charge because it has equal number of protons, positive particles and electrons, negative particles. But when a neutral atom loses an electron, it becomes ion with one positive charge. Positive charged atom is called cation. Similarly, when a neutral an atom on gaining an electron, becomes an ion with one negative charge. Negative charged atom is called anion. Cation and anion combined by an ionic bond to form a salt, example sodium chloride. pH is a measure of the hydrogen ion concentration in a solution.