AnswersGA-GSE Physical Science AAtomic Theory

Atoms Answers

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1
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What do an electron and a neutron have in common?

E
Each particle has a mass of 1 amu.
E
Each particle exists inside an atom.
E
Each particle has an electrical charge.
E
Each particle is located in the nucleus.
2
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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.

Question illustration
A
It contains most of the mass.
B
It is negatively charged.
C
It is mostly empty space.
D
It is composed of electrons.
3

How does an atom change if all of its electrons are removed?

T
The atom’s volume increases.
T
The atom’s mass increases.
T
The atom becomes positively charged.
T
The atom becomes negatively charged.
4

What is the main difference between protons and neutrons?

P
Protons have a much smaller mass than neutrons.
P
Protons have a much larger volume than neutrons.
P
Protons have an electrical charge, but neutrons have no charge.
P
Protons make up the nucleus, but neutrons orbit around the nucleus.
5

best

T
The positive charge of the neutrons in the nucleus equals the negative charge in the electron cloud.
T
The positive charge of the protons in the nucleus equals the negative charge in the electron cloud.
T
The negative charge of the neutrons in the nucleus equals the positive charge in the electron cloud.
T
The negative charge of the protons in the nucleus equals the positive charge in the electron cloud.
6

Which part of an atom is mostly empty space?

n
nucleus
p
proton cloud
e
electron cloud
n
neutron
7

Students are completing a table about a particular subatomic particle that helps make up an atom. The students have filled in one cell of the table so far.Based on the information shown, which statement about the subatomic particle must be correct?

Question illustration
A
Its location is in the nucleus, because the particle is a proton or a neutron.
B
Its location is in the nucleus, because the particle is a neutron or an electron.
C
Its charge is +1, because the particle is a proton.
D
Its charge is 0, because the particle is a neutron.
8

best

T
The viewer travels through the electron cloud, then the protons, and then the nucleus.
T
The viewer travels through the nucleus, then the electron cloud, and then the nucleus again.
T
The viewer travels through the electron cloud, then the neutrons, and then the protons.
T
The viewer travels through the electron cloud, then the nucleus, and then the electron cloud again.
9

best

Question illustration
w
with “Inside the nucleus,” because the particle is a proton
w
with “Inside the nucleus,” because the particle is a neutron
w
with “Outside of the nucleus,” because the particle is a proton
w
with “Outside of the nucleus,” because the particle is an electron
10

least

e
electron
p
proton
n
neutron
t
the atom
11

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.
12

How does an atom change if all of its electrons are removed?

A
The atom’s volume increases.
B
The atom’s mass increases.
C
The atom becomes positively charged.
D
The atom becomes negatively charged.
13

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.
14

A blue circle labeled proton and A overlaps a pink circle labeled neutron and C. The overlap is labeled B.

Question illustration
A
Is negatively charged
B
Has mass of 1 amu
C
Orbits the nucleus
D
Is positively charged
15

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.
16

Which statement describes an atomic nucleus?

A
An atomic nucleus is negatively charged.
B
An atomic nucleus has no electrical charge.
C
An atomic nucleus consists of mostly empty space.
D
An atomic nucleus contains most of the atom’s mass.
17

At the center, 6 unmarked red balls are interspersed with 4 blue balls marked with plus signs. A green cloud with 2 concentric white lines surrounds the center, with 2 small green balls marked with minus signs on the inner white line and 2 small green balls marked with minus signs on the outer white line.

Question illustration
A
4 amu
B
6 amu
C
10 amu
D
14 amu
18

Students are completing a table about a particular subatomic particle that helps make up an atom.What best explains how they should complete the table?

Question illustration
A
with “Inside the nucleus,” because the particle is a proton
B
with “Inside the nucleus,” because the particle is a neutron
C
with “Outside of the nucleus,” because the particle is a proton
D
with “Outside of the nucleus,” because the particle is an electron
19

Which subatomic particle has the least mass?

A
electron
B
proton
C
neutron
D
the atom

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