What are two atoms with the same number of protons but different numbers of neutrons called?
twin molecules
amu
ions
isotopes
What is this model called?
Chocolate Chip Cookie Model
The Big Bang Theory Model
Planetary Model
Plum Pudding Model
Who was the first known scientist to develop the concept of the atom?
Democritus
John Dalton
J.J. Thomson
Aristotle
Which units to scientists use to measure the subatomic particles in atoms?
subatomic particle units (spu)
millimeters (mm)
proton units (pu)
atomic mass units (amu)
A molecule of Nickel (Ni) element has how many protons?
28
Which scientist is responsible for the discovery of the nucleus?
John Dalton
Niels Bohr
J.J. Thomson
Ernest Rutherford
How many protons does a molecule of Neon (Ne) have?
10
Which scientist first discovered electrons?
Ernest Rutherford
Aristotle
J.J. Thomson
Democritus
What is this model called?
Plum Pudding Model
Planetary Model
The Skibidi Model
Elemental Model
The cluster of particles in the center of a molecule is called the...
electron cloud
nucleus
proton cluster
black hole
The elements of the periodic table are arranged ____________.
Alphabetically
When they were discovered
by their atomic number
How much the scientists liked each one