Ion Formation
What ion does sodium form?
Na+
What is a Type I metal?
A metal with only one possible charge.
Write the formula for calcium chloride.
CaCl₂
What type of reaction is:
A + B → AB
synthesis
Balance:
H₂ + O₂ → H₂O
2H₂ + O₂ → 2H₂O
What ion does sulfur form?
S²⁻
What is a Type II metal?
A metal that can form multiple charges.
Name MgO.
Magnesium oxide
What type of reaction is:
AB → A + B
decomposition
Balance:
Na + Cl₂ → NaCl
2Na + Cl₂ → 2NaCl
Why do metals lose electrons?
To achieve a full valence shell / noble gas configuration
Is zinc Type I or Type II?
type I
Write the formula for diphosphorus pentoxide.
P₂O₅
What type of reaction is:
Zn + CuSO₄ → ZnSO₄ + Cu
single replacement
Balance:
Fe + O₂ → Fe₂O₃
4Fe + 3O₂ → 2Fe₂O₃
How many electrons does aluminum lose when forming an ion?
3
Name the compound: FeCl₃
Iron(III) chloride
Name N₂O₅.
Dinitrogen pentoxide
What type of reaction is:
AgNO₃ + NaCl → AgCl + NaNO₃
double replacement
Balance:
C₃H₈ + O₂ → CO₂ + H₂O
C₃H₈ + 5O₂ → 3CO₂ + 4H₂O
Which element forms a 2− ion: oxygen, sodium, or aluminum?
oxygen
Why are Roman numerals used in compound names?
To show the charge of a Type II metal.
Write the formula for copper(II) nitrate.
Cu(NO₃)₂
What type of reaction is:
CH₄ + O₂ → CO₂ + H₂O
combustion
Balance:
Al + HCl → AlCl₃ + H₂
2Al + 6HCl → 2AlCl₃ + 3H₂