Counting number of elements
How many different elements are in this compound?
CO₂
2
Carbon (C) and Oxygen (O)
How many atoms are in this compound?
CO
1 C
1 O
= 2
Is this compound ionic or covalent?
H₂O
covalent
Name That Ionic Compound:
NaCl
sodium chloride
Name That Covalent Compound
CO
carbon monoxide
How many different elements are in this compound?
NaOH
3
Sodium (Na), oxygen (O) and hydrogen (H)
How many atoms are in this compound?
H₂O
2 H
1 O
= 3
Is this compound ionic or covalent?
NaCl
ionic
Name That Ionic Compound:
MgO
magnesium oxide
Name That Covalent Compound
CO₂
carbon dioxide
How many different elements are in this compound?
NH₄Cl
3
nitrogen (N), hydrogen (H) and chlorine (Cl)
How many atoms are in this compound?
C₂H₆
2 C
6 H
= 8
Is this compound ionic or covalent?
CO₂
covalent
Name That Ionic Compound:
CaBr₂
calcium bromide
Name That Covalent Compound
N₂O
dinitrogen monoxide
How many different elements are in this compound?
Fe₂O₃
2
iron (Fe) and oxygen (O)
How many atoms are in this compound?
Ca(OH)₂
1 Ca
2 O
2 H
= 5
Is this compound ionic or covalent?
MgO
ionic
Name That Ionic Compound:
Na₂SO₄
(Contains the complex anion sulfate.)
sodium sulfate
Name That Covalent Compound
PCl₃
phosphorus trichloride
How many different elements are in this compound?
KAl(SO₄)₂
4
potassium (K), aluminium (Al), sulfur (S) and oxygen (O)
How many atoms are in this compound?
4Mg(OH)₂
4 Mg
8 O
8 H
= 20
Is this compound ionic or covalent?
Ca(NO₃)₂
ionic
Name That Ionic Compound:
NH₄NO₃
(has complex ions nitrate and ammonium)
ammonium nitrate
Name That Covalent Compound
N₂O₅
dinitrogen pentoxide