The history of the atom
Parts of the atom
More about the atom
The periodic table
More about the periodic table
100
He combined the idea of elements with the Greek theory of the atom to form a 4 part atomic theory still used today.
Who was John Dalton?
100
This is the center portion of the atom where the protons and neutrons are located.
What is the nucleus of an atom?
100
All matter is made up of these.
What are atoms?
100
This is a chart made up of elements.
What is the periodic table?
100
Nonmetals are located on this side of the periodic table.
What is the right side?
200
He discovered negatively charged particles, electrons, which are part of every atom.
Who was JJ Thomson?
200
These are positively charged particles of an atom.
What are protons?
200
The number of protons in the nucleus of an atom.
What is the atomic number of an element?
200
This is a substance that cannot be broken down into simpler substances.
What is an element?
200
This element is on the "wrong" side of the periodic table, according to its characteristics.
What is hydrogen?
300
He discovered the nucleus of an atom.
Who was Earnest Rutherford?
300
These subatomic particles are found OUTSIDE of the nucleus.
What are electrons?
300
The number of neutrons PLUS the number of protons.
What is the mass number/atomic mass/atomic weight of an element?
300
This is a characteristic of metals that allows them to be able to be drawn into wires.
What is ductile?
300
This characteristic of metals allows it to be able to be hammered or rolled into sheets.
What is malleable?
400
He discovered the electron cloud and energy levels (orbitals) of an atom.
Who was Niels Bohr?
400
These subatomic particles have no charge and are found in the nucleus of an atom.
What are neutrons?
400
This is how the periodic table is arranged - or how the periodic table is organized.
What is by increasing atomic number?
400
Metalloids are able to conduct electricity, but not as well as metals. This term means to be able to partially conduct electricity.
What is semiconductor?
400
This characteristic of metals means that they are able to reflect light well.
What is luster?
500
They were the first who devised a theory of atoms (tiny particles).
Who were the Greek philosophers?
500
This is another name for the energy levels of an atom, where the electrons are located.
What are orbitals?
500
These have the same number of protons but different number of neutrons.
What are isotopes of an element?
500
This element is the only metal that is liquid at room temperature, not solid.
What is mercury?
500
This contains an element's atomic number, element symbol, element name and atomic mass (weight).
What is a box of the periodic table?
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