The video tutorial explains how atoms or molecules become ions by gaining or losing electrons, resulting in an electric charge. It further distinguishes between cations, which are positive ions formed by the loss of electrons, and anions, which are negative ions created by the gain of electrons.

What is an ion?

• An atom or molecule with no charge

• A molecule that has gained protons

• An atom that has lost neutrons

• An atom or molecule that has gained or lost electrons

What happens to an atom when it becomes a cation?

• It loses protons

• It gains protons

• It loses electrons

• It gains electrons

Which of the following is true about cations?

• They are positively charged

• They are neutral

• They are negatively charged

• They are formed by gaining electrons

What is an anion?

• A neutral atom

• An ion that has lost protons

• A negative ion formed by gaining electrons

• A positive ion formed by losing electrons

How is an anion formed?

• By gaining protons

• By losing protons

• By gaining electrons

• By losing electrons