Atomic Structure Flashcards
Define Atom
Smallest particle of an element
3 Subatomic particles of an atom
Proton
Neutron
Electron
What sub atomic particles are found in Nucleus
Protons
Neutrons
Why are atoms overall neutral?
They have equal number of protons(+ve charge) and electrons(-ve charge) and neutrons dont have a charge
They cancel each other out and are overall neutral
What is the Atomic number
Number of Protons/electrons
How to find no of neutrons?
Mass number- Atomic Number
What are Isotopes?
Isotopes are atoms of same elements which differ in no.of neutrons
How many electrons can the first shell hold
2
What is a compound?
A substance formed when two or more elements are chemically combined
What is a Positive Ion
Cation
What is a Negative Ion
Anion
What is an Ion?
An ion is formed when an atom loses or gains electrons to achieve a full outer shell
What is a Mass Number?
No of Protons + No of Neutrons
Formula for Relative Atomic Mass
(mass number x abundance) + (mass number x abundance)/ Total abundance
