Atomic Structure Quiz
Authored by Jacob Lamie
Chemistry
8th Grade
NGSS covered
Used 8+ times
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which particle is found in the nucleus of an atom and has a positive charge?
Electron
Proton
Neutron
Orbit
Answer explanation
The proton is a positively charged particle located in the nucleus of an atom, while electrons are negatively charged and found in orbitals, and neutrons are neutral. Therefore, the correct answer is proton.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which letter points to a neutron?
A
B
C
D
Answer explanation
In the diagram, letter B points to the neutron, which is a neutral particle found in the nucleus of an atom. This distinguishes it from protons and electrons, which have positive and negative charges, respectively.
Tags
NGSS.HS-PS1-8
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which statement best describes the overall charge of the nucleus of an atom?
It is always neutral.
It is always positive.
It is always negative.
It depends on the number of electrons.
Answer explanation
The nucleus of an atom is composed of protons and neutrons. Protons carry a positive charge, while neutrons are neutral. Therefore, the overall charge of the nucleus is always positive, making 'It is always positive' the correct statement.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A student builds a model of an atom with 3 protons, 4 neutrons, and 3 electrons. What is the overall charge of the atom?
Positive
Negative
Neutral
It cannot be determined.
Answer explanation
The atom has 3 protons (positive charge) and 3 electrons (negative charge). The charges balance each other, resulting in a neutral overall charge. Therefore, the correct answer is Neutral.
Tags
NGSS.MS-PS1-1
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which subatomic particle is the smallest in terms of mass?
Proton
Neutron
Electron
Nucleus
Answer explanation
The electron is the smallest subatomic particle in terms of mass, significantly lighter than protons and neutrons. The nucleus is not a particle but a collection of protons and neutrons.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If you were to build a model of an atom, where would you place the electrons?
Mixed in with the protons and neutrons in the nucleus.
In the center, with the nucleus orbiting around them.
Bonded to the outside of the nucleus.
Moving in paths or orbits outside of the nucleus.
Answer explanation
Electrons are found moving in paths or orbits outside of the nucleus, as described by the Bohr model and quantum mechanics, which depict them as existing in specific energy levels around the nucleus.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following comparisons about subatomic particles is correct?
Protons have a positive charge and are much less massive than electrons.
Neutrons have no charge and have a mass similar to protons.
Electrons have a negative charge and are located in the nucleus.
Protons have a negative charge and neutrons have a positive charge.
Answer explanation
Neutrons are neutral particles with no charge and have a mass similar to protons, making this statement correct. The other options contain inaccuracies about the charges and locations of protons and electrons.
Tags
NGSS.HS-PS2-4
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