Workbook 1 Pages 19 - 20

Chemical Equation 2 CuO + C → CO2 + 2 Cu Reactants Products 1) Cu = Element(s) Not balanced Balanced, or not? Reactants Products 1) 2 CuO + C → CO2 + 2 Cu Cu = Cu = O = O = C = C =

If it helps, draw the substances Chemical Equation Element(s) Not balanced Balanced, or not? Reactants Products 1) 2 CuO + C → CO2 + 2 Cu If it helps, draw the substances Cu O C 2 Cu = Cu = 2 O = O = 1 C = C =

2 2 2 2 1 1 Chemical Equation 2 CuO + C → CO2 + 2 Cu Reactants Element(s) Not balanced Balanced, or not? Reactants Products Cu O C 1) 2 CuO + C → CO2 + 2 Cu 2 2 Cu = Cu = 2 2 O = O = 1 1 C = C =

yes 2 2 2 2 1 1 Chemical Equation 2 CuO + C → CO2 + 2 Cu Reactants Element(s) Not balanced Balanced, or not? Reactants Products yes 1) 2 CuO + C → CO2 + 2 Cu 2 2 Cu = Cu = 2 2 O = O = 1 1 C = C =

1 4 2 Chemical Equation CH4 + O2 → CO2 + 2 H2O Reactants Products 2) Element(s) Not balanced Balanced, or not? Reactants Products 2) CH4 + O2 → CO2 + 2 H2O O H C 1 C = C = 4 H = H = 2 O = O =

1 1 4 4 2 4 Chemical Equation CH4 + O2 → CO2 + 2 H2O Reactants Element(s) Not balanced Balanced, or not? Reactants Products 2) CH4 + O2 → CO2 + 2 H2O O C H 1 1 C = C = 4 4 H = H = 2 4 O = O =

No 1 1 4 4 2 4 Chemical Equation Oxygen CH4 + O2 → CO2 + 2 H2O Element(s) Not balanced Balanced, or not? Reactants Products No 2) CH4 + O2 → CO2 + 2 H2O Oxygen 1 1 C = C = 4 4 H = H = 2 4 O = O =

No 4 4 4 2 2 2 Chemical Equation 4 HCl + O2 → Cl2 + 2 H2O Chlorine Element(s) Not balanced Balanced, or not? Reactants Products No 3) 4 HCl + O2 → Cl2 + 2 H2O Chlorine 4 4 H = H = 4 2 Cl = Cl = 2 2 O = O =

yes 1 1 4 4 2 2 1 1 Chemical Equation Ca(OH)2 + CO2 → CaCO3 + H2O Element(s) Not balanced Balanced, or not? Reactants Products yes 4) Ca(OH)2 + CO2 → CaCO3 + H2O 1 1 Ca = Ca = 4 4 O = O = 2 2 H = H = 1 1 C = C =

No 3 3 2 2 2 6 Chemical Equation 3 Mg + 2 HCl → 3 MgCl2 + H2 Chlorine Element(s) Not balanced Balanced, or not? Reactants Products No 5) 3 Mg + 2 HCl → 3 MgCl2 + H2 Chlorine 3 3 Mg = Mg = 2 2 H = H = 2 6 Cl = Cl =

yes 1 1 4 4 2 2 Chemical Equation Ca + 2 H2O → Ca(OH)2 + H2 Reactants Element(s) Not balanced Balanced, or not? Reactants Products yes 6) Ca + 2 H2O → Ca(OH)2 + H2 1 1 Ca = Ca = 4 4 H = H = 2 2 O = O =

No 2 2 6 5 6 5 Chemical Equation Hydrogen 2 NH3 + 3 Cl2 → 5 HCl + N2 Element(s) Not balanced Balanced, or not? Reactants Products 7) 2 NH3 + 3 Cl2 → 5 HCl + N2 No Hydrogen Chlorine 2 2 N = N = 6 5 H = H = 6 5 Cl = Cl =

No 4 4 12 12 6 10 Chemical Equation 4 NH3 + 3 O2 → 4 NO + 6 H2O Oxygen Element(s) Not balanced Balanced, or not? Reactants Products No 8) 4 NH3 + 3 O2 → 4 NO + 6 H2O Oxygen 4 4 N = N = 12 12 H = H = 6 10 O = O =

Ca10F2(PO4)6 + 7 H2SO4 → 3 Ca(H2PO4)2 + 7 CaSO4 + 2 HF Chemical Equation Element(s) Not balanced Balanced, or not? Reactants Products 9) Ca10F2(PO4)6 + 7 H2SO4 → 3 Ca(H2PO4)2 + 7 CaSO4 + 2 HF Ca = Ca = F = F = P = P = O = O = H = H = S = S =

Ca10F2(PO4)6 + 7 H2SO4 → 3 Ca(H2PO4)2 + 7 CaSO4 + 2 HF Chemical Equation Element(s) Not balanced Balanced, or not? Reactants Products Ca10F2(PO4)6 + 7 H2SO4 → 3 Ca(H2PO4)2 + 7 CaSO4 + 2 HF 9) Ca P O O O O H S O Ca = Ca = Ca H S O Ca F = F = P O O O O H S O Ca P = P = Ca F P O O O O Ca O = O = H S O H S O Ca F H = P O O O H = O Ca Ca P S = O O O O S = H S O Ca P O O O O H S O

Ca10F2(PO4)6 + 7 H2SO4 → 3 Ca(H2PO4)2 + 7 CaSO4 + 2 HF Chemical Equation Element(s) Not balanced Balanced, or not? Reactants Products 9) Ca10F2(PO4)6 + 7 H2SO4 → 3 Ca(H2PO4)2 + 7 CaSO4 + 2 HF yes 10 10 Ca = Ca = 2 2 F = F = 6 6 P = P = 52 52 O = O = 14 14 H = H = 7 7 S = S =

CHEMICAL EQUATIONS.