1. Chemical Reactions

2. Outline Chemical Reaction Chemical Equation
Parts of a chemical equation
Skeleton Equation
Types of Reactions

3. Chemical Reaction
Process that leads to the transformation of one set of chemical substances to another.

4. Chemical Equations
A representation of a chemical reaction that uses symbols to show how the reactants form into products.
Think of it like the words underneath a piece of art that describe it for the viewer.

5. Parts of a chemical equation
Reactants – Chemicals on the left side of the equation
Products – Chemicals on the right side of the equation
Reactants “react” to “produce” the products.

6. Skeleton Equations
Chemical Equation that does not indicate the relative amounts of reactants and products
I.E. This just lets us know what reactants and products are involved, not the correct amounts of them

7. Combination Reaction
Chemical change where two or more substances react to form a single new substance.
Also known as Synthesis reaction
Na + Cl -> NaCl is a simple combination reaction.

8. Decomposition Reaction
Chemical change where a single compound breaks down into two or more simpler products.
2HgO-> 2Hg + O2

9. Single Replacement Reaction
Chemical change where one element replaces a second element in a compound
Zn + Cu(NO3)2 -> Cu + Zn(NO3)2

10. Activity Series
Lists metals in decreasing order of reactivity. A metal will replace any metal beneath it on the chart.
For example: Tin would replace Copper, but not Carbon.

11. Double Replacement Reaction
Chemical Change involving an exchange of positive ions.
For example: Na2S + Cd(NO3)2 -> Cds + 2NaNO3

12. Combustion Reaction
Chemical change where an element or compound reacts with oxygen often producing energy in the form of light and heat.
2C8H O2 -> 16CO2 + 18H2O is the reaction between gasoline and air inside a combustion engine.

13. Reaction Type overview
Reaction Types
Combination A B  AB or 2H O2  2H2O
Decomposition AB  A B or
2NaHCO3  H NaCO3
Single-Displacement AX B  BX + A or
Fe CuCl2  FeCl2 + Cu
Double-Displacement AB CD  AD CB or Pb(NO3) KI  PbI KNO3
Combustion hydrocarbon O2  CO2 + H2O or C6H12O O2  6CO H2O