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Matter 4
Test Description: Atoms and Atomic Structure
Instructions: Answer all questions to get your test result.
1) What scientist first developed the idea of the atom?
A
Democritus
B
Neils Bohr
C
Earnest Rutherford
D
John Dalton
2) What is the name of the most current atomic model?
A
Billiard Ball model
B
Electron Cloud model
C
Chocolate Chip Cookie model
D
Orbiting model
3) Which part of an atom contains the most mass?
A
Electron
B
Neutron
C
Proton
D
Prion
4) What part of an atom is refered to by the atomic number?
A
Protons
B
Neutrons
C
Quarks
D
Electrons
5) What part of an atom is refered to by the mass number?
A
Protons and Electrons
B
Just the Protons
C
Neutrons and Electrons
D
Protons and Neutrons
6) If an atom has a mass number of 33 and has 17 neutrons in the nucleus, what else is true about this atom?
A
It has 17 electrons orbiting around the nucleus.
B
It is an atom of Chlorine.
C
The atom is classified as a metal.
D
It has an atomic number of 16.
7) What term is used to refer to two atoms of the same element with different atomic masses?
A
Ions
B
Quarks
C
Isotopes
D
Twinkies
8) If a neon atom has the second electon level completely filled, how many electrons does the atom contain total?
A
8
B
18
C
10
D
2
9) If an atom of atomic number 4 has a +2 overall charge, how many electrons does the atom contain?
A
8
B
2
C
6
D
4
10) Why is the mass of an atom's electrons not included in the mass number?
A
Electrons move so fast that their mass cannot be measured.
B
The electrons' mass is represented in the atomic number.
C
The electrons' negative charge cancels out their mass.
D
The electrons are much less massive than the rest of the atom.
*select an answer for all questions
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