2. Atoms & Elements

Which two ions are most abundant in ocean water?

If an atom loses two electrons, what will be its resulting charge?

Which of the following best describes how a negative ion (anion) is formed?

What is the charge of a magnesium ion (Mg^{2+})?

Which term is used to describe particles that carry a negative or positive electric charge?

Which of the following is a cation?

What type of ion is formed when an atom loses electrons?

How does an atom become a cation?

What is the charge of a hydroxide ion (OH)?

Which two ions are most abundant in ocean water?

When NH_4NO_3 is dissolved in water, which ions are formed?

When forming a monatomic ion from a neutral atom, how many electrons can be removed at one time in a single ionization step?

Which of the following species is an ion?

Which of the following ions will form a compound with the bicarbonate ion (HCO_3^-) in a 1:1 cation to anion ratio?

Which of the following statements correctly describes the difference between a cation and an anion?