Modue 2: Atomic Structure, Isotopes And Compounds / Formulae Flashcards
(12 cards)
What is Atomic number?
Number of protons in nucleus of atom
What is Bohrs model?
Atom with a small dense nucleus, electrons orbit nucleus
What is an electron?
A negatively charged subatomic particle with the mass of 1/1836
What’s a neutron?
A neutral subatomic particle with the mass of 1
What is a proton?
A positively charged subatomic particle with the mass of 1
What’s an isotope?
Atoms with the same amount of protons and electrons, and a different number of neutrons
What is mass number?
The number of protons and neutrons in an atom
What’s relative abundance
The amount of a substance when compared to another
What’s relative atomic mass?
The weighted mean mass of an atom compared to carbon - 12
What’s relative isotopic mass?
It’s the mass of an isotope compared to carbon - 12
What’s relative formula mass?
The mass of the formula that is a giant structure
What’s an ionic compound?
A compound of opposite charges, held together by electrostatic forces
