Elements Flashcards
0
Q
What are representative particles?
A
Atoms, molecules and formula units
1
Q
A mole = _____ of representative particles
A
6.02 x 10^23
2
Q
What is a molecule?
A
A compound
3
Q
What is a formula unit?
A
A compound
4
Q
What’s special about a formula unit?
A
It’s a compound of metals and non-metals
5
Q
To find the molar mass-
A
Add up the atomic mass and put over 1 mole
6
Q
Moles to mass
A
Go to grams (atomic mass)
7
Q
Mass to moles
A
1 mole / grams
8
Q
Isotopes
A
When the amount of neutrons is different for the same element
9
Q
Atomic mass
A
Mass for one atom of the element
10
Q
Atomic number
A
Number of protons and electrons
11
Q
Atom
A
Single element
12
Q
Ion
A
Atoms that have a positive or negative charge
13
Q
Cation
A
Atom with a positive charge
14
Q
Anion
A
Atom with a negative charge
