Atomic Structure
The atom has how many different regions.
2
These two particles make up the nucleus
Proton and neutron
The atomic number is equal to the number of
Protons
This Dane hypothezied that electrons travel in fixed orbits around the nucleus.
Neils Bohr
The subatomic particle has no mass
Electron
The there is lots of spaced in nucleus.
False
The nucleus is densly packed.
True or False:
The mass of a proton is the same as the mass of an electron.
False
To figure out the mass of an atom add these two particles together
Protons and neutrons
The creator of the modern Periodic Table of Elements
Mendeleev
This particle has no charge
Neutron
The area surround the nucleus where electrons are located
Electron Cloud
A substance that is made up of only 1 kind of atom
element
What is the mass of this atom if we have 6 protons, 8 neutrons, and 6 electrons?
14 amu
He said the atom was mostly empty space
Ernest Rutherford
Particle with a +1 charge
Proton
Nucleus
The number of electrons the first shell can hold
2
The periodic table is arranged by the
Atomic number
His model of the atom was called the "Plum Pudding" model.
JJ Thomson
The subatomic particle has a -1 charge
Electron
True or False
Electrons shells are weaker further away from the nucleus.
False
True or False
Generally speaking, electrons fill the innermost shells first.
True
A nitrogen atom has an atomic mass of 14. It's atomic number is 7. How many neutrons are found in this atom?
7
He proposed all matter is made of invisible atoms that cannot be created nor destroyed but combine to make compounds.
John Dalton
AMU stands for
Atomic Mass Unit