Types of chemical Reactions
Counting Atoms
Factors Affecting Reactions
Important Vocabulary
Endothermic and Exothermic Reactions
100
In this type of chemical reaction, two simple molecules come together to make one.
Synthesis
100
How many elements are in the following formula?
C8H11NO2
4
100
____________ temperature will decrease the rate of a reaction
Decrease
100
The starting materials in a chemical equation are called
Reactants
100
In this type of reaction, energy is absorbed
Endothermic
200
What type of reaction is pictured below:
Single Replacement
200
How many atoms are in the following formula?
C8H11NO2
22 atoms
C = 8
H = 11
N = 1
O = 2
200
_______________ concentration will increase the rate of a reaction.
Increasing
200
The compounds or molecules formed after a chemical reaction has occurred are called _______________.
Products
200
In this type of reaction, energy is released
Exothermic
300
The following equation is an example of a ___________________ reaction.
KI + Pb(NO3)2 → PbI2 + KNO3
Double Replacement
300
How many individual atoms are in the following Fe2O3(H2O)
8 atoms
Fe = 2
O = 4
H = 2
300
Similar to a matchmaker, adding a __________ will increase the rate of a reaction.
Catalyst
300
This law states that mass is the same before and after a chemical reaction.
Conservation of Mass
300
Endothermic reactions would feel __________ to the touch.
Cold
400
The picture below is an example of a ________________ reaction.
Double Replacement
400
How many individual atoms are in the following:
3 Fe2O3(H2O)2
33 atoms
400
List three things that can be done to make a reaction happen faster.
Increase Temperature
Increase surface area
Increase concentration
Add a catalyst
400
The energy needed to get a reaction started is called
Activation Energy
400
The graph below is an example of an _______________________ reactions
Exothermic
500
The following reaction is an example of a ___________________ reaction.
C3H8 + O2 → H2O + CO2
Combustion
500
In the reaction below, how many atoms should be on the product side of the reaction?
C6H12 + O2 →
20 atoms
C = 6
H = 12
O = 2
500
Does splitting a log increase or decrease the surface area of the log?
Increases (more of the log is exposed to air)
500
The number placed before a molecule/compound that describes the number of molecules/compounds is called the _____________
Coefficient
500
In an Exothermic reaction the reactants have _________________ energy than the products.
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