Download Ch. 9 Test Review

Ch. 9 Test Review
the process by which one or
more substances change to
produce one or more different
substances
Chemical reaction
a solid that is produced as a
result of a chemical reaction in
solution
precipitate
a chemical reaction in which heat
is released to the surroundings
Exothermic reaction
the law that states that energy
cannot be created or destroyed
but can be changed from one
form to another
Law of conservation of Energy
A chemical reaction that requires
heat
Endothermic reaction
a combination of chemical
symbols and numbers to
represent a substance
Chemical Formula
a substance that forms in a
chemical reaction
Product
a representation of a chemical
reaction that uses symbols to
show the relationship between
the reactants and products
Chemical Equation
the law that states that mass
cannot be created or destroyed
in an ordinary physical and
chemical change
Law of conservation of Mass
a substance or molecule that
participates in a chemical
reaction
Reactant
Label each graph
Energy
Released
Activation
Energy
Activation
Energy
Label each graph
Energy
Absorbed
Endothermic Reaction
Exothermic Reaction
Label each part
a. Coefficient
b. Subscript
c. Yields
d. product
e. reactants
List the 8 Diatomic Elements
A.
B.
C.
D.
E.
F.
G.
H.
List the 8 Diatomic Elements
A. Hydrogen
B. Nitrogen
C. Oxygen
D. Fluorine
E. Chlorine
F. Bromine
G. Iodine
H. Astatine
Balance this equation
• ____Al2S3  ___Al + ___ S8
Balance this equation
• 8 Al2S3  16 Al + 3 S8
Balance this equation
• _HCl + _Na2S  _H2S + _NaCl
Balance this equation
• 2HCl + Na2S  H2S + 2NaCl
Balance this equation
• _CH4 + _O2  _CO2 + _H2O
Balance this equation
• CH4 + 2 O2  CO2 + 2H2O
Balance this equation
•_Fe + _O2  _Fe2O3
Balance this equation
•4Fe + 3O2  2Fe2O3
Balance this equation
•_H2 + _O2  _H2O
Balance this equation
•2H2 + O2  2H2O