Y2 Unit 5 Written Work#1

Quiz
•
Science
•
7th Grade
•
Hard
Norman Rios
Used 4+ times
FREE Resource
11 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which atomic model was the first one to include electrons?
Dalton's Snooker Ball model
Thomson's Plum Pudding model
Rutherford's Electron Cloud model
Bohr's Electron Shell model
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which atomic model was the first one to include the nucleus?
Dalton's Snooker Ball Model
Thomson's Plum Pudding model
Rutherford's Electron Cloud model
Bohr's Electron Shell Model
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
He confirmed the existence of uncharged particles in the nucleus called neutrons.
JJ Thompson
Ernest Rutherford
John Dalton
James Chadwick
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is the area around the nucleus in the modern atomic model called the electron cloud?
because it contains a dense cloud of many electrons
because the electrons are constantly moving in unpredictable ways around the nucleus
because scientists do not know how many electrons an atom has
because electrons are large and spread out
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
During a science experiment, Kharis and Khesed are comparing two forms of sodium. How do these two forms of sodium differ?
in the number of nuclei
in the number of electrons
in the number of protons
in the number of neutrons
6.
OPEN ENDED QUESTION
3 mins • 1 pt
Noah is studying the properties of elements in his chemistry class. He learns that a Gold atom has 79 protons, 118 neutrons, and 79 electrons. What is the mass of this atom? Show solution.
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7.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Jimmy is conducting an experiment on building an atom with the following components:
Protons: 7
Neutrons: 6
Electrons: 6
What element did he form?
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