1. Types of Chemical
Reactions

2. What combines with what?
A B
X Y

3. Types of Chemical Reactions
•A synthesis is a type of chemical reaction in which two
or more substances combine and form one compound.
•You can recognize a synthesis reaction because two or
more reactants form only
one product.
Synthesis

4. Types of Chemical Reactions
•A synthesis is a type of chemical reaction in which two
or more substances combine and form one compound.
•You can recognize a synthesis reaction because two or
more reactants form only
one product.
Synthesis

5. Types of Chemical Reactions
•In a decomposition reaction, one compound breaks
down and forms two or more substances.
•You can recognize a
decomposition reaction
because one reactant forms
two or more products.
•Decomposition is the reverse
of synthesis.
Decomposition

6. Types of Chemical Reactions
•In a decomposition reaction, one compound breaks
down and forms two or more substances.
•You can recognize a decomposition reaction
because one reactant forms two or more products.
•Decomposition is the reverse of synthesis.
Decomposition

7. Types of Chemical Reactions
•In a replacement reaction, an atom or a group of atoms
replaces part of a compound.
•Two types of replacement reactions can occur:
•Single-replacement
•Double-replacement
Replacement

8. Types of Chemical Reactions
•In a single-replacement reaction, one element replaces
another element in a compound. In this type of
reaction, an element
and a compound react
and form a different
element and a different
compound.
Single-Replacement

9. Types of Chemical Reactions
•In a single-replacement reaction, one element replaces
another element in a compound. In this type of
reaction, an element and a compound react and form
a different element and a different compound.
Single-Replacement

10. Types of Chemical Reactions
•In a double-replacement reaction, the negative ions in
two compounds switch places, forming two new
compounds. In this type of reaction, two compounds
react and form two new compounds.
Double-Replacement

11. Types of Chemical Reactions
•In a double-replacement reaction, the negative ions in
two compounds switch places, forming two new
compounds. In this type of reaction, two compounds
react and form two new compounds.
Double-Replacement

12. Types of Chemical Reactions
Combustion
•Combustion is a chemical reaction in which a substance
combines with oxygen and releases energy.
•A combustion reaction usually releases energy as
thermal energy and light energy.
•Burning is a common combustion reaction.
•These reactions always produce carbon dioxide and
water.

13. Types of Chemical Reactions
•Combustion is a chemical reaction in which a substance
combines with oxygen and releases energy.
•A combustion reaction usually releases energy as
thermal energy and light energy.
•Burning is a common combustion reaction.
•These reactions always produce carbon dioxide and
water.
Combustion

14. What Type of Chemical Reaction?

15. What Type of Chemical Reaction?
1. In a ___________________ reaction, the negative ions
in two compounds switch places, forming two new
compounds.
single-replacement
double-replacementdecomposition
combustion
synthesis

16. What Type of Chemical Reaction?
2. In a ___________________ reaction, one compound
breaks down and forms two or more substances.
single-replacement
double-replacementdecomposition
combustion
synthesis

17. What Type of Chemical Reaction?
3. In a ___________________ reaction, a substance
combines with oxygen and releases energy.
single-replacement
double-replacementdecomposition
combustion
synthesis

18. What Type of Chemical Reaction?
4. In a ___________________ reaction, one element
replaces another element in a compound.
single-replacement
double-replacementdecomposition
combustion
synthesis

19. What Type of Chemical Reaction?
5. In a ___________________ reaction, two or more
elements or compounds combine and form one
compound.
single-replacement
double-replacementdecomposition
combustion
synthesis

20. What Type of Chemical Reaction?
6. Energy can be released as light or thermal energy in a
___________________ reaction.
single-replacement
double-replacementdecomposition
combustion
synthesis

21. What Type of Chemical Reaction?
8. 2 C4H10 + 13 O2 ------> 8CO2 + H2O is an example of a
___________________ reaction.
single-replacement
double-replacementdecomposition
combustion
synthesis

22. What Type of Chemical Reaction?
9. HCl + FeS -----> FeCl2 + H2S is an example of a
___________________ reaction.
single-replacement
double-replacementdecomposition
combustion
synthesis