_P4+_O2 →  _P2O3
  • 3 P4+1 O2 → 2 P2O3
  • 1 P4+1 O2 → 2 P2O3
  • 1 P4+ 3 O2 → 2 P2O3
  • 1 P4+ 2 O2 → 3 P2O3
_AgNO3 + _Cu →_Cu(NO3)2 + _Ag
  • 2 AgNO3 + 2 Cu → 3 Cu(NO3)2 + 1 Ag
  • 2 AgNO3 + 1 Cu → 1 Cu(NO3)2 + 2 Ag
  • 1 AgNO3 + 2 Cu → 2 Cu(NO3)2 + 1 Ag
  • 3 AgNO3 + 2 Cu → 3 Cu(NO3)2 + 2 Ag
_BaS + _PtF2 → _BaF2 + _PtS
  • 1 BaS + 1 PtF2 → 1 BaF2 + 1 PtS
  • 4 BaS + 2 PtF2 → 1 BaF2 +  1 PtS
  • 1 BaS + 2 PtF2→ 2 BaF2 +  2 PtS
  • 1 BaS + 3 PtF2 →1 BaF2 +  2 PtS
_AlBr3 + _K2SO4 → _KBr + _Al2(SO4)3
  • 6 AlBr3 + 1 K2SO4 → 6 KBr + 1 Al2(SO4)3
  • 2 AlBr3 + 3 K2SO4 → 6 KBr + 1 Al2(SO4)3
  • 1 AlBr3 + 1 K2SO4 → 2 KBr + 3 Al2(SO4)3
  • 2 AlBr3 + 3 K2SO4 → 1 KBr + 2 Al2(SO4)3
_SO2 + _Li2Se →_SSe2 + _Li2O
  • 1 SO2 + 2 Li2Se → 1 SSe2 + 2 Li2O
  • 1 SO2 + 1 Li2Se → 2 SSe2 + 2 Li2O
  • 2 SO2 + 2 Li2Se → 2 SSe2 +  2 Li2O
  • 2 SO2 + 2 Li2Se → 1 SSe2 + 1 Li2O
_Al + _HCl →_H2 + _AlCl3
  • 2 Al + 2 HCl → 2 H2 + 6 AlCl3
  • 3 Al + 3 HCl → 6 H2 + 2 AlCl3
  • 1 Al + 1 HCl → 3 H2 + 1 AlCl3
  • 2 Al + 6 HCl → 3 H2 + 2 AlCl3
_K + _Cl2 →_KCl
  • 2 K + 16 Cl2 → 8 KCl
  • 2 K + 1 Cl2 → 2 KCl
  • 3 K + 4 Cl2 → 3 KCl
  • 1 K + 1 Cl2 →1 KCl
_NaF + _Br2 →_NaBr + _F2
  • 1NaF + 2 Br2 →1 NaBr + 2 F2
  • 2NaF + 2 Br2 → 2 NaBr + 2 F2
  • 2 NaF + 3 Br2 → 1 NaBr + 2 F2
  • 2 NaF + 1 Br2 → 2 NaBr + 1 F2
Balance this equation,            Al2O3 ---> Al + O2 
  • Cannot be balanced
  • 2Al2O3 ---> 2Al + 3O2 
  • 2Al2O3 ---> 4Al + 3O2 
  • 3Al2O3 ---> 2Al + O2 
Balance this equation:  H2 + N2 → NH3
  •  H2 + 4N2 → NH3
  •  H2 + 3N2 → 2NH3
  •  3H2 + N2 → 2NH3
  •  2H2 + 2N2 → 2NH3
How many total atoms are represented?         4Al2O3
  • 2
  • 8
  • 5
  • 20
Substances that enter into a chemical reaction (found to the left side of the arrow) 
  • product
  • reactant
  • chemical
  • balanced equation
The large number in front of a chemical formula or compound is the ___________. 
  • coefficient
  • product
  • physical
  • chemical
In every balanced chemical equation, each side of the equation has the same number of ____.  
sc-5 sb-7-Balancing Chemical Reactionsimg_no 96.jpg
  • coefficients
  • moles
  • molecules
  • atoms of each element
Is the following equation balanced or unbalanced?Fe + S --> FeS
  • balanced
  • unbalanced
When balancing equations what does --> mean?
  • subscript
  • equals
  • it is just an arrow
  • yield
What is the part of the chemical equation in green called? Fe + S --> FeS
  • products
  • reactants
  • yield
  • chemical formula
How many atoms of aluminum are on each side of the following equation: 4Al + 3O2 --> 2Al2 O3
  • 2
  • 6
  • 1
  • 4
___________________ are the elements or compounds that are formed in a chemicalreaction.
  • Polymers
  • Bonds
  • Reactants
  • Products
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