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Unit 3 - Chemical Reaction Notes and Vocabulary
Let’s define the follow key terms
Chemical reaction
chemical equation
Combustion reaction
synthesis reaction
decomposition reaction
replacement reaction
Single-replacement reaction
law of conservation of mass
Enduring Understandings
 During a chemical change matter can neither be created or destroyed.
 A chemical reaction is a process that involves one or more reactants
changing into one or more products.
 Chemical equations describe the change of reactants to products and
obey the law of conservation of mass.
 Coefficients represent how many units of each substance are involved
in a chemical reaction.
 A chemical equation is a way to express relative amounts of reactants
and products
 Types of reactions include synthesis, decomposition, singlereplacement, double-replacement, and combustion.
Types of reactions
 Synthesis: _______________ become _____________________!!!
A + B
 AB
Teacher Example/Analogy _________
 Decomposition: _____________ becomes ____________________!!!
 AB  A + B
Teacher Example/Analogy _________
 Single-replacement
A + BC
+ B
Teacher Example/Analogy _________
 Double-replacement
Teacher Example/Analogy _________
 Combustion
o A reaction in which a compound (often carbon) reacts with
CH + O
CO + H O
Teacher Example/Analogy _________
We will label each part of the reaction together
A ___________________________ B_____________________________
C____________________________ D_____________________________
Label the type of reaction for the following
a. Type of Reaction ________________
P4 + O2 --> P2O3
b. Type of Reaction ________________
KClO3  KCl + O2
c. Type of Reaction ________________
AlBr3 + K2S --> KBr + Al2S3
d. Type of Reaction ________________
NaF + FeCl3  NaCl + FeF3.
e. Type of Reaction ________________
AlCl3  Al + Cl2
f. Type of Reaction ________________
HCl + Zn  ZnCl2 + H2
g. Type of Reaction ________________
AgCl + NaBr NaCl + AgBr
h. Type of Reaction ________________
Mg + O2  MgO
Unit 3 Vocabulary Practice
1. Using notes, this paper, flow chart, and your book do the following.
Instructions: Write each definition in your own words and complete a
drawing that helps describe each word. They can be completed virtual or
on your own paper.
a. Synthesis reaction b. Decomposition reaction c. Single displacement reaction d. Double displacement reaction e. Chemical Equation f. Subscript g. Reactants h. Products i. Element j. Mixtures k. Compounds l. Law of Conservation of Mass m. Atoms
n. Physical Change o. Chemical Change -