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WorksheetsAtomic Unit review
Total questions: 19
Worksheet time: 10mins
What is the atomic mass number of C-14?
8
12
14
6
Isotopes will have a different number of what?
neutrons
protrons
electrons
atomic number
Which subatomic particle is the smallest?
electron
proton
neutron
nucleus
Which particle has a positive charge?
quark
neutrino
proton
electron
What would the atomic number of an element be if it has 6 protons, 8 neutrons, and 6 electrons?
2
14
8
6
Which particle is the largest and has a Neutral charge?
neutron
lepton
proton
electron
What is the basic unit of matter?
neutron
neutrino
atom
electrom
Which two particles are found in the nucleus?
neutron, quark
proton, electron
neutron, electron
proton, neutron
Who was the scientist that discovered the electron?
Thomson
Schrodinger
Dalton
Democritus
The element that has an atomic number of 50 is?
zirconium
tin
vanadium
selenium
Which particle has a negative charge?
proton
neutron
electron
quark
Which element has an atomic number of 98?
carbon
californium
technetium
chlorine
An isotope of Lithium (Li) has a mass of 7. This isotope would have how many neutrons?
7
4
3.5
6.941
Lithium has two different isotopes that occur in nature: Li-6 and Li-7. If Li-6 occurs 7.59% of the time and Li-7 occurs 92.41% of the time, what would the average atomic mass be?
6.941
7.028
6.85
6.6166
Who was the original scientist who first came up with the idea of the invisible particles which he called in ancient Greek "atomos" ?
Democritus
Dalton
Rutherford
Einstein
Who was the British scientist who came up with the idea in 1807 of the Billiard Ball model and 4 Postulates about the atom?
Thomas
Democritus
Rutherford
Dalton
What would be the mass number of an element that has 6 protons, 8 neutrons, and 6 electrons?
8
14
12
6
How many protons does Ne have?
2
10
18
20.179
Who was the scientist that discovered the neutron?
Bohr
Chadwick
Dalton
Einstein
