Here are pointers to review for midterm test:
1. Exothermic and Endothermic reaction:
- The principle of exothermic and endothermic reaction/process;
- describing exo endo reaction in the term of breaking bonds and forming bonds;
- exo-endo process in the changing state of matter
- The examples of exo endo
2. Chemical Equations: Balancing Chemical Equations
- describing chemical equations: the signs in equations
- balance a chemical equations
Balance the following equations.
1. Exothermic and Endothermic reaction:
- The principle of exothermic and endothermic reaction/process;
- describing exo endo reaction in the term of breaking bonds and forming bonds;
- exo-endo process in the changing state of matter
- The examples of exo endo
2. Chemical Equations: Balancing Chemical Equations
- describing chemical equations: the signs in equations
- balance a chemical equations
Balance the following equations.
1 1. ___C2H3Cl + ___O2 à
___CO2 + ___H2O + ___HCl
2 2. ___(NH4)2Cr2O7
à
___NH3 + ___H2O + ___Cr2O3 + ___O2
3 3. ___Al + ___NaOH
+ ___H2O à
___NaAl(OH)4 + ___H2
4 4. ___NH4Cl + ___Ca(OH)2 à
___CaCl2 + ___NH3 + ___H2O
5 5. ___Al + ___NH4ClO4 à
___Al2O3 + ___AlCl3 + ___NO
+ ___H2O
6 6. ___H2SO4 +
___NaHCO3 à
___Na2SO4 +
___CO2 + ___H2O
7 7. _____
NaOH (aq) + _____ H2SO4 (aq) → _____ H2O (l) +
_____ Na2SO4 (aq)
8 8. _____
K (s) + _____ H2O (l) → _____ KOH (aq) + _____ H2 (g)
9.
____ H2 +
____ O2 à ____ H2O
10. ____
Pb(OH)2 + ____ HCl à ____ H2O + ____ PbCl2
11. ____
AlBr3 + ____ K2SO4 à
____ KBr + ____ Al2(SO4)3
12. ____
CH4 + ____ O2 à ____ CO2 + ____ H2O
13. ____
C8H18 + ____ O2 à ____ CO2 + ____ H2O
14. ____
FeCl3 + ____ NaOH à ____ Fe(OH)3 + ____NaCl
15. ____
Ag2O à ____ Ag + ____O2
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