Topic Test: Atomic Structure and Chemical Bonding
Quiz
•
Science
•
9th Grade
•
Hard
+2
Standards-aligned
Richard Saballos
Used 3+ times
FREE Resource
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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following scientists used a cathode ray to demonstrate the existence of negatively charged subatomic particles called electrons?
JJ Thomson
Ernest Rutherford
Niels Bohr
John Dalton
Answer explanation
JJ Thomson is well known for his cathode ray experiment in which he observed the ray be deflected by a magnet. This suggested that the ray was composed of a negatively charged particle proving the existence of electrons.
Tags
FL.SC.912.P.8.3.
2.
MATCH QUESTION
1 min • 1 pt
Match the model with the the scientists theory that inspired it.
Schrodinger's (Current) Theory
Bohr's Theory
Dalton's Theory
Thomson's Theory
Rutherford's Theory
Answer explanation
Tags
FL.SC.912.P.8.3.
3.
OPEN ENDED QUESTION
3 mins • 3 pts
Explain how Ernest Rutherford's gold foil experiment provided evidence that atoms have a nucleus and are mostly empty space. Your response should address the 2 key findings of the experiment and how they led to the understanding of atomic structure. Please write one well-organized paragraph. (+1 for explaining the empty space, +1 for explaining the nucleus, +1 for proper grammar and spelling)
Evaluate responses using AI:
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Answer explanation
1 point for mentioning that alpha particles can only go straight through the gold foil if atoms are mostly empty space
1 point for mentioning that alpha particles that were deflected could only happen if they had hit the nucleus
1 point for using proper grammar and vocabulary
Tags
FL.SC.912.P.8.3.
4.
MATCH QUESTION
1 min • 1 pt
Match each subatomic particle with the correct charge
Neutral
Proton
Negative
Electron
Positive
Neutron
Answer explanation
Protons are positive subatomic particles found in the nucleus with the neutral neutrons. Electrons are negatively charged and are found in the electron cloud orbiting the nucleus.
Tags
FL.SC.912.P.8.4.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
True or False: The charge of an atom is neutral if the number of protons equals the number of neutrons.
False
True
Answer explanation
Neutrons are neutral so they do not contribute to the overall charge of an atom. When protons (positive) and electrons (Negative) are present in equal amounts the atom is neutral.
Tags
FL.SC.912.P.8.4.
6.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
The mass number is composed by adding the number of _______ and _______.(Must select only 2 answers)
Protons
Neutrons
Electrons
Answer explanation
Protons and neutrons have similar masses while electrons are massless by comparison. So adding the mass of the proton and neutrons encompasses the atomic mass.
Tags
FL.SC.912.P.8.4.
7.
REORDER QUESTION
1 min • 1 pt
Rank the fundamental forces from STRONGEST to WEAKEST (Left/Strongest/1 to Right/Weakest/4)
Weak Nuclear Force
Strong Nuclear Force
Electromagnetic Forces
Gravity
Answer explanation
The strong nuclear force (SNF) is the strongest force we know of that binds protons and neutrons together in the nucleus. Following that is electromagnetism that has a strength that is 1/137 of the SNF and helps binds electrons to the positively charged nucleus. The weak nuclear force is 1/1000000 the strength and is what leads to nuclear decay. The gravitational force is 10-41 strength of the SNF and its the attraction between larger masses.
Tags
FL.SC.912.P.10.10.
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