History of Chemistry
Parts of an Atom
Atomic Masses
Periodic Table
Atomic Numbers
100
The Greek word meaning 'cannot be divided any more"
Atomos
100
The inner part of an atom that contains the proton and the neutron is called the __________.
Nucleus
100
If an atom was enlarged so the electrons were spinning around the stands of a football stadium, how big would the nucleus be?
marble
100
How many elements are found in the Periodic Table?
103-112
100
Atomic numbers of an atom are the same as the number of what in an atom?
protons
200
People thought you could turn iron and lead into what?
gold
200
These particles have a positive charge and are found inside the nucleus.
proton
200
Atomic masses are determined by adding the number of protons and what?
neutrons
200
Different kinds of atoms are called _______________
elements
200
Carbon's atomic number is _______.
6
300
The earliest form of chemistry was called _______.
alchemy
300
These particles are located within the nucleus, and have no charge.
Neutron
300
A proton has the atomic mass of what?
1
300
The symbol for Gold is
Au
300
What element has a number of 56?
barium
400
Names for elements comes from the English or __________ name.
latin
400
These particles are negatively charge and are found outside the nucleus.
electrons
400
A neutron has the atomic mass of what?
1
400
The vertical columns are called ___________
Groups
400
Why does hydrogen have an atomic number of 1?
because it only has one proton
500
The name of the particle Rutherford fired through a film of Gold to help understand the structure of atoms.
Alpha
500
Most of the mass of an atom is located here.
nucleus
500
What makes the mass of isotopes of atoms vary?
Different numbers of neutrons.
500
This metal is liquid at room temperature
Mercury
500
Some atoms have more ___________, which makes it an ion and gives it a negative charge
electrons
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