Unit 5 Electrons Review

Quiz
•
Chemistry, Science
•
9th - 12th Grade
•
Medium
Roschell Thybulle
Used 10+ times
FREE Resource
32 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
During a flame test, crystals of an element are passed through the Bunsen burner flame. The flame turns a violet color. What can be concluded from this violet colored flame?
electrons are moving fast to make a short wavelength
electrons are moving slow to produce a long wavelength
electrons are moving fast to make a long wavelength
electrons are moving slow to make a short wavelength
Answer explanation
since the order of colors is ROY G BIV and its in order from longest to shortest wavelength, violet has the shortest wavelength. Wavelength and frequency/energy are inversely proportional so if it has a short wavelength it will have a high frequency and high energy.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Four different compounds are burned in a flame test. One compound produces a yellow color, one a blue color, one an indigo color, and one a red color. Which compound’s electrons had the GREATEST energy?
yellow
blue
indigo
red
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Bohr’s model of the atom had electrons moving in specific paths (called orbits) around the nucleus. This model of the atom is known as the:
plum pudding model
nuclear atom model
quantum mechanical model
planetary model
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the name for the lowest, most stable energy state of an atom?
excited state
ground state
elementary state
quantum state
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When an electron moves from the excited state to the ground state which of the following has occurred?
an electron absorbs light
an electron moves from a lower energy level to a higher energy level
an electron emits light
nothing occurs
6.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Which of the following is a statement of the quantum mechanical model of the atom? (you may choose more than one
electrons move in orbitals around the nucleus
electrons move in orbits around the nucleus
electrons move as both particles and waves
electrons move in one path and if close to the nucleus get sucked in
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following can be concluded based on research by De Broglie?
electrons behave as particles only
electrons behave as waves only
electrons behave as neither particles nor waves
electrons behave as both particles and waves
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