WorksheetsChapter 6a Masses of Particles
Total questions: 12
Worksheet time: 11mins
The isotope that all isotopic masses are compared to is
oxygen-16
hydrogen-1
carbon-12
magnesium-24
The isotopic masses of these isotopes are
H = 1
He = 4
Li = 7
C = 12
H = 1
He = 2
Li = 3
C = 6
H = 2
He = 6
Li = 10
C = 18
H = 0
He = 2
Li = 4
C = 6
Relative isotopic abundance is the defined as the % of each isotope in a naturally occurring sample of an element.
True
False
The most common isotope of hydrogen is
hydrogen-1
hydrogen-2
hydrogen-3
The most common isotope of chlorine is
chlorine-35
chlorine-37.
The relative atomic mass of silver is
106.9.
108.9
107.9
The relative atomic mass is defined as
the mass of an atom relative to 1 kg.
the masses of all isotopes of an element added and divided by the number of isotopes.
the average mass of all isotopes of an element determined by their percentage abundance.
the mass of atoms as measured by a mass spectrometer.
Using this information, the relative atomic mass of iridium, Ir, is
191.97
192.20
7,244.2
241.97
Relative molecular mass is the relative mass of molecules and relative formula mass if the relative mass of ionic compounds.
True
False
The relative molecular mass of CO2 is
28
44
56
14
The relative formula mass of Na2O is
30
39
62
19
The relative formula mass of Al(NO3)3 is
57
89
117
213
