Chp 2 Basic Atomic Theory Flashcards
1
Q
Atom
A
The simplest part of an element which still retains the properties of that element
2
Q
Ion
A
Charged atom
3
Q
Element
A
A substance which cannot be dived any further by chemical means
4
Q
Compound
A
Two or more elements combined chemically
5
Q
Molecule
A
Two or more atoms combined chemically
6
Q
Atomic number
A
The unique identifying number for an element. It is equal to the number of protons
7
Q
Mass number
A
Mass of the atom
It is equal to the number of protons added to the number of neutrons.
8
Q
Isotopes
A
Atoms with the same atomic number but a different mass number
9
Q
Relative atomic mass
A
The average mass of the naturally occurring isotopes of an atom, taking into account their abundances, relative to 1/12th of the mass of an atom of Carbon-12 which is defined as having a mass of 12
