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Samuels CHEM Electrons Atomic Structure
Test Description: Chemistry Electrons Atomic Structure
Instructions: Answer all questions to get your test result.
1) What instrument is used to separate colors precisely?
A
spectrometer
B
spectroscope
C
hydroscope
D
refractoscope
2) What is a prism that separates light into component wavelengths?
A
refractoscope
B
spectrometer
C
hydroscope
D
spectroscope
3) Who came up with the planetary model of the atom in 1911?
A
Rutherford
B
Lewis
C
Bohr
D
Heisenberg
4) Which model says that electrons stay in specific orbits called energy levels?
A
Heisenberg
B
Rutherford
C
Bohr
D
Lewis
5) What is the lowest energy state in the atom at the lowest orbit?
A
excited state
B
flat state
C
elevated state
D
ground state
6) If an electron moves up an energy level, it is said to be in ______.
A
ground state
B
elevated state
C
excited state
D
flat state
7) Which model says that electrons move around as particles in motion that have properties of waves?
A
electron levels model
B
planetary model
C
wave-mechanical model
D
electron cloud model
8) Which model says that electrons are found in regions called orbitals?
A
wave-mechanical model
B
electron levels model
C
electron cloud model
D
planetary model
9) What principle tells that electrons do not have precisely measurable positions and momenta?
A
Bohr planetary principle
B
Heisenberg uncertainty principle
C
Electron configuration principle
D
Lewis determinate principle
10) This is a region of space where there is a high probability of finding an electron.
A
energy levels
B
orbitals
C
nucleus
D
magnetic spins
*select an answer for all questions
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