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WorksheetsAtoms and Nuclear Energy
Total questions: 15
Worksheet time: 8mins
What particle provides the negative charge for an atom?
proton
neutron
electron
megatron
How many neutrons will an atom have if it has an atomic number of 12, an atomic mass of 24, and a charge of +2?
12
24
10
14
The rings in the Bohr's model of the atom are called...
space
nucleus
orbitals
core
The subatomic particle that determines what element the atom is a
proton
neutron
electron
megatron
An atom with an unequal number of protons and electrons is called a(n)...
isotope
ion
neutral atom
unbalanced atom
In the isotope name, Uranium-253, what does the 253 represent?
charge
atomic number
mass
number of electrons
The mass number of an atom, ion, or isotope is the ____ and ____ added together.
protons and electrons
electrons and neutrons
protons and neutrons
nucleus and orbitals
This type of nuclear reaction occurs when light isotopes, of Hydrogen, join (or fuse) to form stable Helium.
fission
fusion
chain reaction
radioactive decay
Nuclear energy can be found where in the atom?
electron cloud
orbitals
nucleus
protons
Atoms look EXACTLY like Bohr's model of the atom.
True
False
Which scientist performed the Gold Foil Experiment?
Rutherford
Thomson
Dalton
Bohr
What percentage of radioactivity do we look for when determining an isotope's half-life?
20%
30%
40%
50%
What is the atomic number for Boron?
5
10
11
15
What percentage of Uranium-235 (unstable isotope of Uranium) is needed for power plants?
less than 1%
1%
4%
20%
What is the most penetrating form of radiation?
Alpha particles
Beta particles
UV rays
Gamma rays
