leapamintuan-typesofchemicalreaction-161219053936.ppt

chemical reaction

1. TYPES OF
CHEMICAL REACTION

2. Five Types of Chemical Reactions
Synthesis
Decomposition
Single Replacement
Double Replacement
Combustion

3. SYNTHESIS
-The word Synthesis means to
put things together to make a whole.
-In a Synthesis reaction two
or more chemicals bond together
forming one new substance.

4. SYNTHESIS
THE GET-TOGETHER
REACTANT + REACTANT → PRODUCT
A + B AB
→

5. SYNTHESIS
Synthesis reactions are easy to
recognize. There will be two or more
reactants, but only one product.
Example :
2Na + Cl
2 → 2NaCl
2H
2 + O
2 → 2H
2O

6. DECOMPOSITION
•The word Decomposition
means to separate or breakdown
into smaller pieces.
•In a Decomposition
reaction, one substance breaks
down into two or more products.

7. DECOMPOSITION
THE BREAK-UP
REACTANT → PRODUCT +
PRODUCT
AB A + B
→

8. DECOMPOSITION
Decomposition reactions , look for
chemical equations which have only
one reactant, but two or more
product.
Example :

9. SINGLE REPLACEMENT
•Single
replacement
reaction, one element
replaces another element
in a compound.

10. SINGLE REPLACEMENT
THE CHEATER
REACTANT + REACTANT → PRODUCT + PRODUCT
AB + C AC + B→

11. SINGLE REPLACEMENT
•Single replacement reactions
have an element and a
compound on both the reactant
and product side of the
equation.
Zn+2HCl →ZnCl
2+H
2

12. DOUBLE REPLACEMENT
•Double replacement
reaction, a compound
reacts with another
compound to form two
new compounds.

13. DOUBLE REPLACEMENT
THE SWAP
REACTANT+REACTANT →PRODUCT+PRODUCT
AB + CD AD + CB→

14. DOUBLE REPLACEMENT
•Double replacement reactions
have two compounds on both the
reactant and product side of the
equation.
AgNO
3+NaCl→AgCl+NaNO
3

15. COMBUSTION
•Combustion, or burning, is
a chemical reaction between an
organic compound ( usually a
hydrocarbon) and oxygen gas.
•The products in a combustion
reaction are carbon dioxide and
water.

16. .
•Combustion reactions are
exothermic, meaning that they
produce heat.
•The general formula for a
combustion reaction is :
C
xH
X+ O
2→CO
2+H
2O

17. .
•Combustion reactions always
have oxygen gas as a reactant
and water and carbon dioxide as
product.