Key Terms
Chemicals on the left side of a Chemical equation are known as?
Reactants
When writing balanced equations, what ions are written first on the products side?
Cations
Zinc & lead (II) nitrate react to form
zinc nitrate & lead
Mg2+ and Cl-
MgCl2
___ Na + ___ Cl -> ___ NaCl
_1__ Na + 1___ Cl -> __1_ NaCl
Chemicals on the right side of the equation are known as?
Products
When transferring the anions to the product side what needs to happen to show a reaction has occured?
Anions attach to different cations from the reactants side.
Potassium Metal & Chlorine gas combine to form
potassium chloride
Li+ and O2-
Li2O
___ Na + ___ I2 -> ___ NaI
___ Na + ___ I2 -> ___ NaI
What are the correct terms for positive and negative charged ions?
Cations and Anions
After writing the products what step must happen with the chemical formula?
Balance the ion charges to equal 0.
Aluminum & hydrogen chloride react to form
aluminum chloride & hydrogen
NH4+ and N3-
(NH4+)3N3-
P + O2 -> P2O5
4P + 5O2 -> 2P2O5
What state of matter is precipitation?
Solid
Once the Chemical Formulas are balanced where must numerals be placed to balance an equation?
Large numbers at the front of the chemical formula.
Name the states, solution of Calcium hydroxide & granules of phosphoric acid react
Aqueous and Solid
NH4+ and SO42-
(NH4+)2SO42-
___ AgF + ___ CaCl2 -> ____ AgCl + ____ CaF2
__2_ AgF + _1__ CaCl2 -> ___2_ AgCl + 1__ CaF2
What state is a dilute solution containing Sodium Chloride?
Aqueous
Why must chemical equations be balanced?
To satisfy the Law of conservation of mass, where matter is not created or destroyed.
Name all the states - granules of Sodium phosphate & a dilute solution of calcium chloride react to form dissolved calcium phosphate & a sodium chloride precipitate and chlorine gas.
s, aq, aq, s, g.
Fe3+ and SO42-
Fe23+(SO42-)3
___ NH3 + ___ O2 -> ____ N2 + ____ H2O
__4_ NH3 + __3_ O2 -> __2__ N2 + __6__ H2O