A1: Atoms, Ions and Compounds Flashcards
1
Q
Define Relative Atomic Mass
A
The weighted mean mass of an atom of an element, relative to 1/12th of the mass of an atom of Carbon-12
2
Q
Define relative isotopic mass
A
The mass of an isotope relative to 1/12th of the mass of an atom of Carbon-12
3
Q
Define isotope
A
Atoms of the same element with different numbers of neutrons and therefore different masses.
4
Q
Nitrate ion formula
A
NO3-
5
Q
Carbonate ion formula
A
CO3 2-
6
Q
Sulfate ion formula
A
SO4 2-
7
Q
Hydroxide Ion
A
OH-
8
Q
Ammonium ion
A
OH-
9
Q
Zinc ion
A
Zn2+
10
Q
Silver Ion
A
Ag+
11
Q
Define relative molecular mass (Mr)
A
The weighted mean mass of a molecule compared with one-twelfth of the mass of an atom of carbon-12.
