Ionic equations

Question 1

how to write ionic formulas

Answer 1

the cation is written first, followed by the anion, subscripts are used to denote multiples of the same ion, superscripts are used to denite the charge of the ion

Question 2

polyatomic ions

Answer 2

ions that are made from multiple atoms covalently bonded together

Question 3

how is the name of the ionic compound formed

Answer 3

the first word is the full, uncharged name of the element or molecule from which tthe cation is formed, the second is the namee of the element/molecule from which the anion is formed

Question 4

monoatomic anions name

Answer 4

element + ide

Question 5

anions contaiining oxygen

Answer 5

element + ate

Question 6

potassium bromide

Answer 6

KBr

Question 7

sodium sulfide

Answer 7

Na2S

Question 8

magnesium sulphate

Answer 8

MgSO4

Question 9

calcium carbonate

Answer 9

CaCO3

Question 10

barium nitrate

Answer 10

Ba(NO3)2

Question 11

how is water wrote in a dissolving reaction

Answer 11

H2o is written above the arrow, solvent is written below, its not a reactant because there is no chemical reaction when dissolving occurs

Question 12

double displacement reaction

Answer 12

when ionic compounds can react with each other and ‘swap’ partners

Question 13

exception to tthe valence rule in ionic bonding

Answer 13

lithium, it has once eleectron in its valence shell so loses this electron and the inner shell becomes the valejce shell with 2 electrons

Question 14

ethanoate is actually

Answer 14

acetate

Question 15

hydrogen carbonate is actually

Answer 15

bicarbonate

Question 16

electrovalency of an ion

Answer 16

just the charge of the ion