Atomic Structure Flashcards
What is an atom/element?
“The smallest particle of an element that still has properties of that element “
What are the 4 only elements according to the Greeks?
Earth, Water , Fire & Wind
Who proposed that all matter consists of tiny particles called atoms?
John Dalton
What is an atomic number
“The number of protons in the nucleus of the atom”
Where could you find the atomic number ?
The Atomic number is the smaller number on the “element square”
What is a mass number
The number of protons + neutrons in the nucleus of the atom”
What are the properties of a Proton?
Location : the nucleus
Measurement: 1 amu
Relative charge: +1
What are the properties of a neutron?
Location: nucleus
Measurement: 1 amu
Relative charge: 0
What are the properties of an electron?
Location: electron cloud
Measurement: -1
Relative charge : 1/1840 amu
What did Bohr create?
He created Bohr’s diagram
