AnswersTOL-202627-S1-SCI-Physical Science 1A - Zisette JenniferTest

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Two red and two overlapping balls in the center are surrounded by a green, fuzzy, circular cloud with a white line running through it. Two green balls sit on the white line, and a line leading a bracket around the balls is labeled A. A line leading to a bracket overlapping the white line is labeled B.

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A
It contains most of the mass.
B
It is negatively charged.
C
It is mostly empty space.
D
It is composed of electrons.
2
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Roberto creates an animation titled “Flying through an Atom.” The animation makes it seem as if the viewer passes all the way through an atom, starting from one side, then through the atom’s center, and then leaving through the other side.What is the best description of the order of events in the animation?

A
The viewer travels through the electron cloud, then the protons, and then the nucleus.
B
The viewer travels through the nucleus, then the electron cloud, and then the nucleus again.
C
The viewer travels through the electron cloud, then the neutrons, and then the protons.
D
The viewer travels through the electron cloud, then the nucleus, and then the electron cloud again.
3

Which statement best explains why the overall charge on an atom is zero?

A
The positive charge of the neutrons in the nucleus equals the negative charge in the electron cloud.
B
The positive charge of the protons in the nucleus equals the negative charge in the electron cloud.
C
The negative charge of the neutrons in the nucleus equals the positive charge in the electron cloud.
D
The negative charge of the protons in the nucleus equals the positive charge in the electron cloud.
4

What do an electron and a neutron have in common?

A
Each particle has a mass of 1 amu.
B
Each particle exists inside an atom.
C
Each particle has an electrical charge.
D
Each particle is located in the nucleus.
5

Which subatomic particle has the least mass?

A
electron
B
proton
C
neutron
D
the atom
6

What is the main difference between protons and neutrons?

A
Protons have a much smaller mass than neutrons.
B
Protons have a much larger volume than neutrons.
C
Protons have an electrical charge, but neutrons have no charge.
D
Protons make up the nucleus, but neutrons orbit around the nucleus.

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