Formation of Ions (CHEM 2)

What is an ion?

• An ion is a type of gas that is used in car engines.

• An ion is an atom or molecule that has a net electrical charge due to the loss or gain of electrons.

• An ion is a type of rock found in outer space.

• An ion is a type of plant that grows in the desert.

How are positive ions formed?

How are negative ions formed?

• An atom gains one or more electrons.

• An atom gains one or more neutrons.

• An atom gains one or more protons.

• An atom loses one or more electrons.

What is the charge of a cation?

• +1

• 0

• -1

• +2

What is the charge of an anion?

• neutral

• zero

• negative

• positive

What is the process called when an atom gains electrons to form an ion?

• reduction

• sublimation

• ionization

• oxidation

What is the process called when an atom loses electrons to form an ion?

• oxidation

• reduction

• dissociation

• ionization

Give an example of a cation.

• chloride ion (Cl-)

• potassium ion (K+)

• nitrate ion (NO3-)

• sodium ion (Na+)

Give an example of an anion.

• calcium ion

• potassium ion

• chloride ion

• sodium ion

What is the difference between a cation and an anion?

• A cation is a positively charged ion, while an anion is a negatively charged ion.

• A cation and an anion have the same charge.

• A cation is a larger ion than an anion.

• A cation is a negatively charged ion, while an anion is a positively charged ion.