Unit 5 Combined Hmwk Worksheet

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Unit 5 Combined Hmwk Worksheet Powered By Docstoc
					                                           Chemistry Worksheet Unit 5
1. Balance the following chemical equations                  7. Use the sentence to write a chemical equation and
   a) Li + Cl2  LiCl                                           balance it.
   b) O2 + Cl2  Cl2O                                           a) Hydrogen gas and chlorine gas react to form
   c) N2H4 + O2  N2 + H2O                                         gaseous hydrogen monochloride.
   d) Cu2S + O2  Cu2O + SO2                                    b) Over time, liquid hydrogen peroxide (H2O2)
   e) FeS2 + O2  Fe2O3 + SO2                                      decomposes into water and oxygen gas.
   f) Al2(SO4)3 + KOH  Al(OH)3 + K2SO4                         c) The surface of a piece of calcium reacts with
   g) AlCl3 + LiH  AlH3 + LiCl                                    oxygen in the air to form a light gray coating of
   h) NH4Cl + Ca(OH)2  NH3 + H2O + CaCl2                          calcium oxide.
   i) NaHCO3 + H2SO4  Na2SO4 + CO2 + H2O                       d) Solid carbon reacts with pure oxygen gas during
   j) NO2 + H2O  HNO3 + NO                                        burning to yield carbon dioxide gas.
                                                                e) Oxygen gas is converted to ozone gas (O3) in the
2. Write the chemical equation and balance it.
                                                                   upper atmosphere.
   a) Iron + sulfur  ferrous sulfide
                                                                g) Magnesium metal reacts with hydrogen sulfate.
   b) Antimony + chlorine  antimony trichloride
                                                                   The products are hydrogen gas and magnesium
   c) Calcium chloride  calcium + chlorine
                                                                   sulfate.
   d) Iron + hydrogen chloride  ferrous chloride +
       hydrogen                                              8. Identify the water soluble substances.
   e) Calcium fluoride + hydrogen sulfate  calcium             a) PbCl2, CuCl, CuCl2
       sulfate + hydrogen fluoride                              b) KOH, Fe(OH)3, Ba(OH)2, Mn(OH)2
   f) Lead nitrate + hydrogen sulfide  lead sulfide +          c) CuS, Fe2S3, SrS, (NH4)2S
       hydrogen nitrate                                         d) AgNO3, Ag2S, Ag2CO3, AgCH3COO
   g) Magnesium hydroxide + hydrogen nitrate 
                                                             9. Arrange the following chemicals in order from the
       magnesium nitrate + water
                                                                least active to the most active.
3. Write the chemical equation and balance it.                  a) Ca, Ni, Hg, Ba
   a) A solution of dihydrogen dioxide decomposes in the        b) Zn, Cd, Sr, Au
      presence of manganese (IV) oxide to form                  c) Ag, Fe, K, Sn
      dihydrogen monoxide and oxygen.                           d) I2, Cl2, Br2, F2
   b) A piece of iron is left out and exposed to oxygen in      e) O2, Se, Te, S
      the air. Rust, iron (III) oxide, is produced.
                                                             10. Predict whether each of the following single
   c) Solid iron (III) chloride is formed when iron is
                                                                 replacement reactions occurs. If it does occur,
      exposed to chlorine.
                                                                 complete and balance the equation. If it does not
   d) Hydrogen and oxygen will produce dihydrogen
                                                                 occur, write “no reaction.”
      monoxide in the presence of platinum.
   e) A solution of hydrochloric acid and solid barium          Metals replacing metals (assume the following
      sulfate are formed by mixing a solution of barium         charges when ions form: Zn2+, Cu2+, Ag+, Au3+)
      chloride with a solution of sulfuric acid.                   a) Zn    + CuSO4          
   f) Carbon dioxide, water, and aqueous sodium acetate            b) Cu    + AgNO3          
       are formed when a solution of acetic acid                   c) Ag    + Au(C2H3O2) 3
       (HC2H3O2) is mixed with sodium bicarbonate.              Metals replacing hydrogen from acids
                                                                   d) Ba    + H2SO4          
4. How do you recognize a synthesis reaction?
                                                                   e) Mg    + HCl            
5. How do you recognize a decomposition reaction?                  f) K     + HCl            
                                                                Nonmetals replacing nonmetals
6. Predict the products of each reaction below, and then
                                                                   g) I2    + NaCl           
   balance the equation. Remember to make sure every
                                                                   h) Br2 + KI               
   chemical compound is electrically neutral.
                                                                   i) Cl2   + MgBr2          
   a) H2     +   O2      
                                                                Further Practice
   b) Na     + F2        
                                                                   j) Zn    + HNO3           
   c) Mg +       Cl2     
                                                                   k) CaBr2 + F2             
   d) Li    +    Br2     
                                                                   l) Ag    + Fe2O3          
   e) HgO        
                                                                   m) Sr    + Mg(NO3)2 
   f) NaClO3     
                                                                   n) Na    + H2SO4          


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11. Classify each reaction and balance.                      19. Balance the following reactions, write the ionic and
    a) C + O2  CO2                                              net ion reactions.
    b) K + H2O  KOH + H2                                        a) Fe(s) + HCl(aq)  FeCl2(aq) + H2(g)
    c) NaNO3 + KCl  KNO3 + NaCl                                 b) Pb(s) + Cu(NO3)2(aq)  Pb(NO3)2(aq) + Cu(s)
    d) BaCl2 + Na2SO4  BaSO4 + NaCl                             c) NH4I(aq) + Cl2(g)  NH4Cl + I2(s)
    e) Mg + HCl  MgCl2 + H2                                     d) Na2CO3(aq) + BaCl2(aq)  NaCl(aq) + BaCO3(s)
                                                                 e) AlCl3(aq) + NH4OH(aq)  Al(OH)3(s) + NH4Cl(aq)
12. Classify each reaction and balance.
                                                                 f) Ca(OH)2(aq) + HNO3(aq)  Ca(NO3)2(aq) + H2O(l)
    a) CdCO3  CdO + CO2
                                                                 g) BaCl2(aq) + AgNO3(aq)  Ba(NO3)2(aq) + AgCl(s)
    b) NH3 + HCl  NH4Cl
    c) BaCl2 + KIO3  Ba(IO3)2 + KCl                         20. Write equations for the following chemical reactions.
    d) KClO3  KCl + O2                                          Include the state of matter (s, l, g, aq) for each
    e) H2O2  H2O + O2                                           compound involved in the reaction. For example:
    f) Ag + S  Ag2S                                             BaCl2(s) + F2 (g)  BaF2 (s) + Cl2 (g)
                                                                 a) When mercury (II) sulfide is heated with oxygen,
13. Classify each reaction and balance.
                                                                    mercury and gaseous sulfur dioxide are produced.
    a) Fe     + O2        Fe2O3
                                                                 b) Sodium is dropped into a beaker of water. This
    b) Rb     + H2O       RbOH + H2
                                                                    produces hydrogen and a solution of sodium
    c) KNO3 + LiCl        LiNO3 + KCl
                                                                    hydroxide.
    d) FeCl2 + Na2SO4  FeSO4 + NaCl
                                                                 c) A solution of aluminum sulfate and water are
    e) Al     + HCl       AlCl3 + H2
                                                                    formed when a solution of sulfuric acid and a
14. Determine the reaction type, then complete the                  solution of aluminum hydroxide are mixed
    reaction and balance it.                                        together.
    a) NaOH + AlBr3                                             d) Heating HgO powder produces oxygen gas and
    b) Al       + S8                                               beads of silver mercury.
    c) Mg       + ZnCl2 
                                                             21. Predict whether each of the following double
    d) Pb(NO3)2 + NaCl       
                                                                 replacement reactions occurs. If it does occur,
    e) CaCl2    + AgNO3 
                                                                 complete and balance the equation, write the ionic
    f) K2CO3 + ZnI2          
                                                                 reaction and the net ionic reaction. Assume all
15. Classify each reaction. Predict whether each of the          reactants are aqueous. If it does not occur, write “no
    following reactions occurs. If it does occur, complete       reaction.”
    and balance the equation.                                    a) AgNO3 + ZnCl2         
    a) C2H5OH + O2                                              b) FeSO4 + (NH4) 2S 
    b) Zn         + MgSO4                                       c) KOH      + HCl        
    c) Cd         + O2                                          d) NaNO3 + KCl           
    d) C6H6       + O2                                          e) BaCl2    + Na2SO4 
    e) Pb(NO3) 2 + K2CrO4                                       f) FeS      + HCl        
    f) Br2        + CaCl2                                       g) NaCl     + K2SO4      
                                                                 h) AlCl3    + NaOH       
16. Predict the products for each and THEN balance
                                                                 i) NaOH + HNO3           
    each reaction:
                                                                 j) Na2CO3 + H2SO4 
    a) NaCl     + AlBr3     
    b) MgCl2 + AgNO3                                        22. Predict whether each of the following double
    c) Pb(NO3)2 + Na3PO4                                        replacement reactions occurs. If it does occur,
                                                                 complete and balance the equation, write the ionic
17. Predict the products for each and THEN balance
                                                                 reaction and the net ionic reaction. Assume all
    each reaction:
                                                                 reactants are aqueous. If it does not occur, write “no
    a) NaCl      + Al(NO3)3 
                                                                 reaction.”
    b) SrCl2     + AgNO3      
                                                                 a) AgNO3 + NaCl 
    c) FeSO4 + (NH4)3PO4 
                                                                 b) KOH + FeCl3 
    d) C4H9OH + O2            
                                                                 c) NaCl + LiOH 
    e) MgSO4 + Li             
                                                                 d) Pb(NO3)2 + K2CrO4 
18. Predict the products for each and THEN balance               e) NiCl2 + NaOH 
    each reaction:                                               f) H2S + Ca(NO3)2 
    a) Mg        + O2                                           g) Ba(OH)2 + (NH4)2SO4 
    b) C2H6      + O2        
    c) Na2CrO4 + Pb(NO3) 2 
    d) Br2       + MgI2      
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