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WorksheetsUnit 2 Review
Total questions: 15
Worksheet time: 4hrs 45mins
List the atomic theorists in chronological order
Rutherford, Dalton, Thomson, Bohr
Dalton, Thomson, Rutherford, Bohr
Thomson, Dalton, Rutherford, Bohr
Bohr, Rutherford, Thomson, Dalton
The isotope of Carbon C-13 has how many protons, neutrons & electrons (in that order)
13, 6, 13
7, 6, 7
6, 7, 6
6, 13, 6
How many electrons does N-17 have?
17
7
10
14
Calculate the average atomic mass of Boron if 81% is B-11 and 19% is B-10
10.0
10.5
10.8
10.9
What is the most abundant isotope of carbon? (Average atomic mass 12.011)
C-12
C-13
C-14
C-16
What happens if N-14 gains a proton?
It becomes N-15
It becomes O-15
It becomes C-15
It becomes O-16
An element has the following natural abundances and isotopic masses: 90.92% abundance with 19.99 amu, 0.26% abundance with 20.99 amu, and 8.82% abundance with 21.99 amu. Calculate the average atomic mass of this element.
20.99 amu
21.00 amu
20.16 amu
21.16 amu
What element has 11 protons and an average atomic mass of 22.99?
Na
Potassium
N
Magnesium
This model of an atom of Xenon was created by:
Dalton
Thomson
Rutherford
Bohr
Which atom has a higher mass: C-14 or N-14?
C-14
N-14
They have the same mass
What is the most abundant isotope of potassium, according to the average atomic mass listed on the periodic table?
K-39
K-40
K-41
What is this element and its atomic mass?
Cobalt, 29 amu
Copper, 29 amu
Cobalt, 63 amu
Copper, 63 amu
Who performed the Gold Foil Experiment, leading to the discovery of an atom's nucleus?
Dalton
Thomson
Rutherford
Bohr
What is the difference between the isotopes of carbon C-12 and C-14?
C-12 has 2 less protons than C-14
C-12 has 2 less neutrons than C-14
C-12 has 2 more protons than C-14
C-12 has 2 more neutrons than C-14
Which atom has the greatest number of electrons? (Assume all atoms are in their neutral states)
C-14
N-14
N-17
O-16
