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What would you call an atom that has gained or lost electrons?
 
Ion
 
Isotope
 
Electron thief
 
Electrion
Which subatomic particle has the smallest mass?
 
electron
 
proton
 
neutron
How much does a neutron weigh in amu?
1 amu
How much does a proton weigh in amu?
1 amu
Which units to scientists use to measure the subatomic particles in atoms?
 
atomic mass units (amu)
 
millimeters (mm)
 
proton units (pu)
 
subatomic particle units (spu)
What are two atoms with the same number of protons but different numbers of neutrons called?
 
isotopes
 
ions
 
twin molecules
 
amu
Who was the first known scientist to develop the concept of the atom?
 
Democritus
 
Aristotle
 
John Dalton
 
J.J. Thomson
What is this model called?
 
Planetary Model
 
Chocolate Chip Cookie Model
 
Plum Pudding Model
 
The Big Bang Theory Model
What is this model called?
 
Plum Pudding Model
 
Planetary Model
 
Elemental Model
 
The Skibidi Model
According to modern understanding, electrons are found in the...
 
electron cloud
 
nucleus
 
electron bank
 
neutron
How many protons does a molecule of Neon (Ne) have?
10
The elements of the periodic table are arranged ____________.
 
by their atomic number
 
Alphabetically
 
How much the scientists liked each one
 
When they were discovered
Which scientist first discovered electrons?
 
J.J. Thomson
 
Ernest Rutherford
 
Aristotle
 
Democritus
An atom has atomic number 7 and mass number 15. How many neutrons are in the atom?
7
A molecule of Nickel (Ni) element has how many protons?
28
What kind of charge does a proton have?
positive
An atom with mass number: 25 and 11 neutrons. How many protons are there?
14
What kind of charge does a neutron have?
neutral (no charge)
What kind of charge does an electron have?
negative
Which sub-atomic particle is negatively charged?
electron
Which sub-atomic particle is positively charged?
proton
If Aluminum has an atomic number of 13 and it has 14 neutrons, what is the mass number of Aluminum?
27
Which scientist is responsible for the discovery of the nucleus?
 
Ernest Rutherford
 
John Dalton
 
J.J. Thomson
 
Niels Bohr
The cluster of particles in the center of a molecule is called the...
 
nucleus
 
proton cluster
 
electron cloud
 
black hole
A change in the number of _______ changes the identity of the atom.
 
protons
 
neutrons
 
electrons
 
nuclei
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