25.3 Ions

Question 1

ion

Answer 1

neutral atom that has gained or lost an electron

Question 2

anion

Answer 2

ion that has gained electrons (- charge)

Question 3

cation

Answer 3

ion that has lost electrons (+ charge)

Question 4

how to find out which ion it is from the number of protons, neutrons, electrons? (3)

Answer 4

1) use protons to find out identity of atom
2) use protons + neutrons to find out A
3) use protons - electrons to find out charge