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People Involved With The Discovery Of The Atom
Periodic-Table
Parts Of Atoms
Vocab Review
Atomic Theory
100
This person discovered that there are small particles inside the atom.
Who is J.J. Thomson?
100
This is the ammount of columns there are on the periodic-table.
What is 18?
100
This is the name of the center of an atom.
What is the nucleus?
100
The number that is at the top left of a square on the periodic-table.
What is the atomic-number?
100
The atomic theory has been around for more than this many years.
What is 2000 years?
200
This scientist proposed that in the center of the atom is a tiny, extremely dense, area called the "nucleus”.
Who is Ernest Rutherford?
200
This is the ammount of periods there are on the periodic table.
What is 7?
200
This is the particle of an atom that makes up half of the nucleus and has a positive charge.
What is a proton?
200
The object that forms the molecular structure of every object.
What is an atom?
200
The atomic theory is based off of this object.
What is an atom?
300
The Neutron, one of the particles in the “Nucleus” of an Atom, was discovered by this British physicist.
Who is James Chadwick?
300
The number that is at the top left of a square on the periodic-table.
What is the atomic-number?
300
This is the particle of an atom that makes up half of the nucleus and has a nuetral charge.
What is a nuetron?
300
Multiple atoms that are physically combined.
What is a molecule?
300
The paths of electrons can not be _____.
What is predicted?
400
This scientist suggested that electrons traveled around the nucleus in definite paths.
Who is Niels Bohr
400
The combined number of protons and neutrons of an element.
What is the atomic mass.
400
This is the negatively charged particle of an atom.
What is an electron?
400
Multiple atoms that are chemically combined.
What is an element?
400
Regions inside the atom where electrons are likely to be found are called this.
What is an electron cloud?
500
This scientist discovered that all substances are made of atoms.
Who is John Dalton?
500
The number of protons in an elements’s nucleus.
What is the atomic number?
500
This is when multiple atoms physically combine.
What is a molecule?
500
The graph that has all the elements.
What is the periodic-table?
500
Electrons do not travel in definite paths as this scientist suggested.
Who is Niels Bohr?