2.3 Formulae and Equations

Question 1

what are the SIMPLE IONS

Answer 1

group 1, 2, 3, transition metals

Question 2

what happens to simple ions in terms of electrons

Answer 2

the LOOSE electrons to form CATIONS

Question 3

what do transition metals often form in terms of ions

Answer 3

cations

Question 4

what do groups 5,6,7 do in terms of electrons

Answer 4

the GAIN electrons to form ANIONS

Question 5

what is a BINARY compound

Answer 5

contains 2 elements only, ionic compounds, metals + non-metals

Question 6

name the following 
K2O
CaS
MgCl2
Na3N
AlF3

Answer 6

potassium oxide 
calcium sulfate 
magnesium chloride 
Sodium nitride
aluminium floruide

Question 7

what is a polyatomic ion

Answer 7

IONS containing MORE THAN ONE ELEMENT COVALENTLY bonded

Question 8

molecular formula for
silver ion
zinc ion

Answer 8

Ag+

Zn2+

Question 9

what is the:
ammonium ion 
hydroxide ion 
carbonate ion 
nitrate ion 
sulfate ion

Answer 9

ammonium ion NH4+
hydroxide ion OH-
carbonate ion CO32-
nitrate ion NO3-
sulfate ion SO42-

Question 10

how do you write ionic formulae

Answer 10

overall charge must be 0,

Question 11

what is the abbreviation for diatomic molecules

Answer 11

I Have No Friends, CLeaver Or BRilliant

Question 12

what are the other exceptions for simple molecules

Answer 12

P4- phosphorus

S8- Sulfate

Question 13

what type of compounds usually exist as small molecules

Answer 13

covalent

Question 14

Nitrate ion

Answer 14

NO2-

Question 15

Sulfite ion

Answer 15

SO32-

Question 16

Phosphate Ion

Answer 16

PO43-

Question 17

Hydrogen carbonate ion

Answer 17

HCO3-