Fundamental concepts Flashcards
1
Q
Element
A
A substance that can’t be broken down into two or more different substances
2
Q
Atom
A
The smallest uncharged particle of an element
3
Q
Compound
A
Made of two or more elements chemically joined together
4
Q
Ion
A
A charged atom or group of atoms (through the loss or gain of electrons)
5
Q
Avogadro constant
A
6.02 x 10^23 mol^-1
6
Q
A mole
A
The amount of substance containing the Avogadro number of atoms, molecules or groups of ions
7
Q
Molar mass (Mr)
A
One mole of any substance is its atomic mass expressed in grams
8
Q
Molecular formula
A
Representation of the actual number of atoms of each element present in one mole of substance
