Test 6 Webquest
Write all of the answers on your own paper. Each person must submit his or her own
piece of paper.
Balance the following equations and indicate the type of reaction taking place:
1) ____ NaBr + ____ H3PO4  ____ Na3PO4 + ____ HBr
Type of reaction: ____________________
2) ____ Ca(OH)2 + ____ Al2(SO4)3  ____ CaSO4 + ____ Al(OH)3
Type of reaction: ____________________
3) ____ Mg + ____ Fe2O3  ____ Fe + ____ MgO
Type of reaction: ____________________
4) ____ C2H4 + ____ O2  ____ CO2 + ____ H2O
Type of reaction: ____________________
5) ____ PbSO4  ____ PbSO3 + ____ O2
Type of reaction: ____________________
6) ____ NH3 + ____ I2  ____ N2I6 + ____ H2
Type of reaction: ____________________
7) ____ H2O+ ____ SO3  ____ H2SO4
Type of reaction: ____________________
8) ____ H2SO4 + ____ NH4OH  ____ H2O + ____ (NH4)2SO4
Type of reaction: ____________________
Multiple Choice: Write the letter that best completes the statement.
_____9. A chemical reaction is a process in which
a. products change into reactants
b. the law of conservation of mass applies
c. substances can change state
d. all of these
_____10. During a chemical reaction,
a. new elements are produced
b. atoms are rearranged
c. atoms are destroyed
d. elements are destroyed
_____11. An equation is balanced by
a. changing subscripts
b. adding coefficients
c. erasing elements as necessary
d. adding elements as necessary
_____12. An atom’s ability to undergo chemical reactions is determined by its
a. protons
b. innermost electrons
c. neutrons
d. valence electrons
_____13. What are the reactants in the following chemical equation:
Zn + CuSO4  ZnSO4 + Cu
a. zinc and copper
b. zinc sulfate and copper
c. zinc and copper (II) sulfate
d. only zinc
_____14. What are the products in the above equation?
a. zinc and copper
b. zinc sulfate and copper
c. zinc and copper (II) sulfate
d. only zinc
Short Answer
For questions 15-20, classify the reaction according to the type it is. Put that answer in the
blank. Then add coefficients to balance the reaction when necessary.
_____________________ 15. Zn + H2SO4  ZnSO4 + H2
_____________________ 16. H2CO3  CO2 + H2O
______________________17. CaCO3 + HCl ------> CaCl2 + H2CO3
______________________18. AgNO3 + Zn  Zn (NO3)2 + Ag
_____________________ 19. C3H8 + O2  CO2 + H2O
_____________________ 20. C2H5OH + O2  CO2 + H2O
Write a balanced equation for each of the following reactions:
21. Magnesium chloride is the product of a reaction between magnesium and chlorine.
22. Copper (II) hydroxide and potassium sulfate are produced when potassium hydroxide reacts
with copper (II) sulfate.
If you finish early, work on the pre-lab write-up for the Sampler Platter lab.