atom stuff

Question 1

Shells

Answer 1

energy levels that have electrons that orbit around the nucleus

Question 2

2,8, 8,2 model

Answer 2

first shell contains 2 electrons
second shell contains 8 electrons
third shell contains 8 electrons
fourth shell contains 2 electrons

Question 3

why are atoms electrical neutral

Answer 3

they have the same number of protons and electrons

Question 4

how does an atom become an ion

Answer 4

electron is added or removed to the last shell(valence shell)

Question 5

cation

Answer 5

positively charged ions, atom looses electron

Question 6

How do cations form

Answer 6

electron is lost from the last shell

Question 7

anions

Answer 7

negatively charged ion, gain electron

Question 8

when do anions form

Answer 8

electron is added to last shell

Question 9

what happens when cations and anions come together

Answer 9

salts are produced

Question 10

example of ionic compound

Answer 10

sodium chloride

Question 11

what is ion

Answer 11

an atom or group of atoms that are formed when an electron is added or removed from the last shell