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Chemical Reactions

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by

Joseph Estevez

on 3 May 2016

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Transcript of Chemical Reactions

Essentials
Chemical Reactions
Combination/Synthesis
Two or more separate atoms or molecules combine to form one.
General Form:
A + X --> AX
Example:
Mg + O2 --> MgO
Decomposition
Single Replacement/Displacement
A single element displaces a similar element in a compound.
General form:
A + BX --> B + AX
Example:
Al + CuCl2 --> Cu + AlCl3
Double Replacement/Displacement
An element in a compound will displace a similar element in a different compound and vice versa.
General Form:
AX + BY --> AY + BX
Example:
Pb(NO3)2 + KI --> KNO3 + PbI2
Combustion
A hydrocarbon combines with oxygen gas to form carbon dioxide and water
General Form:
CxHy + O2 --> CO2 + H2O
Example:
CH4 + O2 --> CO2 + H2O
5 Major Types
1. Combination/Synthesis
2. Decomposition
3. Single Replacement/Displacement
4. Double Replacement/Displacement
5. Combustion
Follow the law of conservation of mass
No new elements will be created
New formulas for existing elements
Conservation of Mass
Mass is NOT created
Mass is NOT destroyed
Reactants = Products
One compound breaks down into 2 or more simpler substance.
General Form:
AX --> A + X
Example:
H2O2 --> H20 + O2
Compare and Contrast
Combination/Synthesis
Decomposition
Recall, in a
combination/synthesis reaction
,
the law of conservation of mass holds true.
there should be more than one reactant.
there should be only one product.
no new elements should appear after the yields.
follow the general form:
A + X --> AX
Recall, in a
decomposition
reaction,
the law of conservation of mass holds true.
there should be only one reactant.
there should be more than one product.
no new elements should appear after the yields.
follow the general form:
AX --> A + X
Construct a series (3 or more) of multiple choice style questions that assess the characteristics of combination and decomposition style reactions. Do this as a table.

Complete this in a Google Presentation. 1 Question per slide.
Compare and Contrast
Single Replacement/ Displacement
Double Replacement/Displacement
Recall, in a
single replacement reaction
,
the law of conservation of mass holds true.
there should be a single element and a compound as reactants.
there should be a different single element and a compound as products.
no new elements should appear after the yields.
follow the general form:
AX + Y --> X + AY
Recall, in a
double replacement reaction
,
the law of conservation of mass holds true.
there should be two compounds as reactants.
there should be two new compounds as products.
no new elements should appear after the yields.
follow the general form:
AX + Y --> X + AY
Construct a series (3 or more) of multiple choice style questions that assess the characteristics of single and double replacement style reactions. Do this as a table.

Complete this in a Google Presentation. 1 Question per slide.
Full transcript