AnswersSVHS Chemistry 1 FAThe Structure of the Atom

The Structure of the Atom Answers

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1
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What is the charge on an electron?

A
–1
B
0
C
+1
D
+2
2
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The diagram below shows some subatomic particles.What is the particle that is labeled with a question mark (?) in the diagram?

Question illustration
A
beta particle
B
quark
C
isotope
D
alpha particle
3

The table below gives some characteristics of element Y.Characteristics of element YValuesMass number11Number of neutrons in a single atom6Average atomic mass (grams/mole)10.81What is the identity of element Y?

A
C
B
B
C
Na
D
S
4

The diagram below shows some subatomic particles.What is the particle that is labeled with a question mark (?) in the diagram?

Question illustration
A
beta particle
B
quark
C
isotope
D
alpha particle
5

Which statement describes an electron?

A
It has a positive charge and is located in the nucleus.
B
It has a positive charge and is located in orbitals around the nucleus.
C
It has a negative charge and is located in the nucleus.
D
It has a negative charge and is located in orbitals around the nucleus.
6

Which two particles are found in the nucleus of an atom?

A
neutrons and electrons
B
protons and electrons
C
protons and neutrons
D
neutrons and atoms
7

A nitride ion has 7 protons, 8 neutrons, and 10 electrons. What is the overall charge on this ion?

A
–3
B
–2
C
0
D
+3
8

A particle that travels around the nucleus of an atom in orbitals is called a(n)

A
quark.
B
proton.
C
neutron.
D
electron.
9

A scientist uses an accelerator and high energy electrons to study the particles inside the protons of a helium atom. What particles is the scientist studying?

A
the He neutrons
B
the He nucleus
C
the He electrons
D
the He quarks
10

The table below gives the numbers of protons, electrons, and neutrons in four atoms.AtomNumber of protonsNumber of neutronsNumber of electrons198929983991049109Based on the table, which atom has a charge of –1?

A
1
B
2
C
3
D
4
11

The table below gives the atomic mass and relative abundance values for the three isotopes of element M.Relative abundance (%)Atomic mass (amu)78.9923.985010.0024.985811.0125.9826What is the average atomic mass (in amu) of element M?

A
2.86
B
5.36
C
24.30
D
24.98
12

A lithium atom has three protons, three neutrons, and three electrons. What is the overall charge on this atom?

A
–3
B
0
C
+1
D
+3
13

Carbon-12 and carbon-13 are isotopes of carbon. Which of the following statements is correct?

A
They both have seven protons in the nucleus.
B
They both have the same mass number.
C
They both have seven neutrons in the nucleus.
D
They both have the same atomic number.
14

In which of these statements are protons, electrons, and neutrons correctly compared?

A
Quarks are present in protons and neutrons but not in electrons.
B
Quarks are present in protons, neutrons, and electrons.
C
Quarks are present in neutrons and electrons but not in protons.
D
Quarks are present in protons and electrons but not in neutrons.
15

Boron occurs naturally as two isotopes. What is the difference between these isotopes?

A
They have different numbers of electrons and different charges.
B
They have different numbers of neutrons and different charges.
C
They have different numbers of protons and different mass numbers.
D
They have different numbers of neutrons and different mass numbers.
16

An atom contains one proton, one electron, and one neutron. Which two particles are most similar in mass?

A
the neutron and the electron
B
the proton and the electron
C
the proton and the neutron
D
the neutron and the atom
17

An atom of element Be has four protons, four electrons, and five neutrons. Which element below could be an isotope of this atom?

A
sodium-10
B
beryllium-10
C
boron-9
D
carbon-9
18

Which element has 16 protons in its nucleus?

A
neon
B
oxygen
C
sodium
D
sulfur
19

The mass number of Fe2+ is 56. How many neutrons are there in a single Fe2+ atom?

A
28
B
30
C
56
D
58
20

The table below gives some characteristics of element Y.Characteristics of element YValuesMass number11Number of neutrons in a single atom6Average atomic mass (grams/mole)10.81What is the identity of element Y?

A
C
B
B
C
Na
D
S

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