Chemistry Atoms And Ions Flashcards
1
Q
Atomic number?
A
Number of protons
2
Q
Mass number?
A
Sum of protons and neutrons
3
Q
Isotopes?
A
Same number of protons but a different number of neutrons
4
Q
Isotopes of hydrogen?
A
Deuterium (1p, 1n, 1e)
Tritium (1p, 2n, 1e)
5
Q
Relative atomic mass?
A
Weighted average in grams based off of the isotopic composition of the element
6
Q
How do you work out relative atomic mass?
A
(Number x percentage abundance) + (Number x percentage abundance) / 100
7
Q
What is avogadro’s constant?
A
One mole containing a fixed number of particles (6.022 x 10^23 mol^-1)
8
Q
What is the mass of every proton/neutron?
A
1.667x10^-24 g
9
Q
How do you calculate moles?
A
moles = mass/molar mass
10
Q
What is 1M of a substance?
A
contains 1 mole of a substance in 1L
11
Q
What are orbitals?
A
S orbitals are round, P orbitals are dumbel shaped.
