ionic and covalent bonding

Question 1

1:37 understand how ions are formed by electron loss or gain

Answer 1

Ions are electrically charged particles formed when atoms lose or gain electrons.

They have the same electronic structures as noble gases.

Metal atoms form positive ions (cations).

Non-metal atoms form negative ions (anions).

Question 2

Sulfate

Answer 2

SO42-

Question 3

Carbonate

Answer 3

CO32-

Question 4

Nitrate

Answer 4

NO3-

Question 5

Hydroxide

Answer 5

OH-

Question 6

Ammonium

Answer 6

NH4+

Question 7

Silver ion

Answer 7

Ag+

Question 8

Zinc ion

Answer 8

Zn2+

Question 9

Hydrogen ion

Answer 9

H+

Question 10

Copper (II) ion

Answer 10

Cu2+

Question 11

Iron (II) ion

Answer 11

Fe2+

Question 12

Iron (III) ion

Answer 12

Fe3+

Question 13

Lead (II) ion

Answer 13

Pb2+

Question 14

1:41 understand ionic bonding in terms of electrostatic attractions

Answer 14

Ionic bonding: a strong electrostatic attraction between oppositely charged ions.

Question 15

1:44 know that a covalent bond is formed …

Answer 15

A covalent bond is formed between two non-metal atoms by sharing a pair of electrons in order to fill the outer shell.

Question 16

1:45 understand covalent bonds in terms of electrostatic attractions

Answer 16

Covalent bonding: a strong attraction between a shared pair of electrons and two nuclei.