Name it or Write it
Name: K₂O
potassium oxide
How many double bonds in CO2?
2
Name: CO₂ and explain how you knew which naming rules to use
molecular (two nonmetals, prefixes)
Which has higher melting point: NaCl or CO₂?
NaCl - its ionic
NaCl named “sodium monochloride” — what’s wrong?
no prefixes for ionic
Name: SO₃
sulfur trioxide
Draw NH3
See Image 1
Name: NaCl and explain why it does NOT use prefixes
ionic (metal + nonmetal, no prefixes)
Why do metals conduct electricity?
free-moving electrons
CO named “carbon oxide” — what’s wrong?
missing prefix
Name: Cu₂O
copper (I) oxide
Draw sodium + chlorine Lewis structure.
See Image 2
Name: FeCl₂ and explain how you determined the charge of iron
iron (II), based on Cl⁻ charges
Why are ionic compounds brittle?
electrostatic force of repulsion when like charges are lined up in the crystal lattice
FeCl₂ named iron (III) chloride — what’s wrong?
wrong roman numeral (charge)
Write formula: calcium phosphate
Ca₃(PO₄)₂
Draw the Lewis structure for water.
See Image 4
Name: HClO2 and explain why it is named that way
Chlorous Acid
ite --> ous, H means Acid
Why don’t molecular compounds conduct electricity?
no free electrons
missing parentheses
Name: Pb3N2
Lead (II) Nitride
Draw the formation of Calcium Nitride?
See Image 3
Write formula: calcium nitrate and explain how you determined subscripts
Ca(NO₃)₂, balance charges (Ca²⁺ and NO₃⁻)
A substance does NOT conduct electricity and has a low melting point.
What type of bonding does it most likely have and why?
molecular (no free charges, weak intermolecular forces)
CaNO₃ written instead of Ca(NO₃)₂ — what’s wrong?
charges not balanced