Without the strong nuclear force, the nuclei of atoms would
1 point
1
Question 2
2.
To what element does polonium-208 (atomic number 84) decay when it emits an alpha particle?
1 point
1
Question 3
3.
Reaction _____ in the figure shown is an example of a fission reaction.
1 point
1
Question 4
4.
What particle is needed to complete this nuclear reaction?
1 point
1
Question 5
5.
The image above represents a reaction that (select all that apply)
1 point
1
Question 6
6.
Units of energy include which of the following? (Select all that apply)
1 point
1
Question 7
7.
Chemicals have chemical potential energy because (select all that apply)
1 point
1
Question 8
8.
In order to determine the energy content of food, chemists (select all that apply)
1 point
1
Question 9
9.
Endothermic reactions result in: (Select all that apply)
1 point
1
Question 10
10.
Convection currents in the Earth’s crust (select all that apply)
3 points
3
Question 11
11.
Cyclobutadiene combusts with oxygen according to the following reaction:
C4H4 + 5O2 --> 4CO2 + 2H2O
Determine the magnitude of the estimated enthalpy change of this reaction, in kilojoules per mole of reaction. Record just the numerical value. Show your work!
3 points
3
Question 12
12.
An experiment is done to determine the calories released per gram of peanut when combusted. Measurements are taken and recorded in the table below.
According to this data, how many Calories (kilocalories) does each gram of peanut contain? Record just the numerical value, and not the units. Show your work!