WorksheetsNuclear Chemistry Part 2
Total questions: 26
Worksheet time: 13mins
Chemistry is, like many aspects of your own life, all about a search for ___
electrons
the philosopher's stone
meaning
stability
The energy that holds a nucleus together is referred to as ___
gluons
binding energy
the mass defect
gravitational energy
The binding energy of an atom is calculated with the formula ___
E = Pt
E = mgh
E = mc2
E = ½mv2
In 1905, who developed the formula that states that mass is interchangeable with energy?
Niels Bohr
Max Planck
Albert Einstein
Ernest Rutherford
E = mc2 is formally known as ___
the mass-energy equivalence formula
Einstein's last theorem
the relativity equation
the special formula
Protons and neutrons, as components of an atomic nucleus, are collectively known as ___
bosons
nucleons
gluons
photons
A nucleus weighs less than its sum of nucleons, a quantity known as ___
the band gap
relativistic rest mass
the nuclear glitch
the mass defect
The "missing mass" in the nucleus, known as its mass defect, is actually present in the form of ___
gravity
motion
heat
energy
The letter "c" in the mass-energy equivalence formula refers to ___
the speed of light
the Coulomb constant
the mass of the nucleus
the number of nucleons
The mass defect for a mole of oxygen atoms, with a mass of 16 grams, is equivalent to the energy from burning ___
2 tons of wood
4 tons of wood
42 metric tons of coal
420 metric tons of coal
Which type of nuclear reaction occurs when a large nucleus splits into two lighter ones?
fission
division
fusion
decomposition
Which type of nuclear reaction occurs when two light nuclei join together to form a heavier one?
fission
adhesion
fusion
cohesion
Due in part to its high binding energy, which element has the "most stable nucleus"?
Hydrogen-2
Iron-56
Bismuth-209
Uranium-238
If the nucleus of an atom is heavier than iron-56 it will tend to ___
break into two or more smaller nuclei
be stable
be chemically inert
participate in a fusion reaction
If the nucleus of an atom is lighter than iron-56 it will tend to ___
break into two or more smaller nuclei
be stable
be chemically inert
participate in a fusion reaction
With both fission and fusion, as a result of the reaction, stability of the nuclei ___
remains unchanged
isn't a driving factor
decreases
increases
Whether it's used in power plants or bombs, the most common fuel for fission is ___
hydrogen-2
iron-56
uranium-235
uranium-238
The fission reaction of U-235 is almost always triggered by hitting the nucleus with ___
electrons
protons
neutrons
photons
Energy from nuclear fission is released mainly as ___
UV radiation
electromagnetic radiation
the kinetic energy of the escaping particles
gamma rays
A series of fission reactions, each initiated by a neutron produced in a preceding fission, is known as ___
the domino effect
a fusion reaction
a causal nexus
a chain reaction
The control rods in nuclear fission reactors are made of materials that readily absorb ___
energy
neutrons
heat
alpha, beta and gamma rays
The reactions that power the Sun are like most fusion reactions in that they involve ___
very small nuclei
all types of elements
the noble gases
very large nuclei
The fusion reaction in the Sun begins when two atoms of hydrogen join to form an atom of ___
helium
deuterium
tritium
lithium
Our Sun is going to run out of hydrogen fuel, needed to sustain fusion reactions, in about ___
five and a half million years
fifty million years
five and a half billion years
fifty billion years
Compared to heavy nuclei that break apart, the energy change of light nuclei that fuse together is ___
much smaller
slightly smaller
slightly larger
much larger
Fusion reactions can only occur at very high temperatures or pressures, where the material exists in the form of ___
pure energy
lava
magma
plasma
