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WorksheetsChapter 4 Atomic Structure Quiz Review
Total questions: 23
Worksheet time: 26mins
Greek philosopher that came up with the concept of "atomos"
Democritus
Dalton
Thomson
Schrodinger
Discovered the nucleus of the atom
Dalton
Thomson
Rutherford
Bohr
Which subatomic particle determines the identity of an element?
protons
neutrons
electrons
In which way are protons and electrons the same in an atom?
same mass
same number of particles
same charges
What is the atomic number of this atom?
1
3
4
7
The number 16 for the atomic element sulfur is the
ionic number
isotope
atomic mass
atomic number
What is the mass number of this atom?
1
3
4
7
How many protons does sulfur have?
32
16
48
12
An atom has 10 protons, 15 neutrons and 10 electrons what is its mass number.
20
10
35
25
To calculate average atomic mass, you need
the atomic mass of each isotope
the percent abundance of each isotope
the atomic mass and percent abundance of each isotope
to find the average of the atomic masses of each isotope
Chlorine has two naturally occurring isotopes, Cl-35 and Cl-37, The atomic mass of chlorine is 35.45. Which of these two isotopes of chlorine is more abundant?
Cl-35
Cl-37
Cannot be determined from the information provided.
An element has three isotopes. Given the abundances and relative masses, calculate the average atomic mass and determine (from the periodic table) which element it is.
Abundances | Relative masses
0.005% | 234.04 amu
0.720% | 235.04 amu
99.275% | 238.05 amu
Uranium (#92, Atomic Mass: 238.03 amu)
Fluorine (#9, Atomic Mass: 19.00 amu)
Mercury (#89, Atomic Mass: 200.59 amu)
Polonium (#84 209 amu)
