Atom Structure And Isotopes: Quiz!

24 Questions | By Labukamail | Updated: Mar 22, 2022 | Attempts: 698

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Atom Structure And Isotopes: Quiz! - Quiz

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1.

In a neutral atom, the numbers of protons and electrons are _____.
- A.
  
  Not the same
- B.
  
  The same
2.

The charge on an atom is _____.
- A.
  
  Neutral
- B.
  
  Negative
- C.
  
  Positive
3.

A neutral atom has 40 electrons and 46 neutrons. How many protons does it have?
- A.
  
  40
- B.
  
  46
- C.
  
  86
4.

A neutral atom has 22 electrons and 24 neutrons. What is its atomic number?
- A.
  
  22
- B.
  
  24
- C.
  
  45
5.

The atom's mass is found mostly in the atom's _____.
- A.
  
  Nucleus
- B.
  
  Protons
- C.
  
  Electrons
- D.
  
  Electron cloud
6.

A particle has 25 protons, 22 electrons and 24 neutrons. Which of these statements is true?
- A.
  
  The particle is an ion.
- B.
  
  The particle is a neutral atom.
7.

What is the atomic number of an atom that has 12 protons, 13 neutrons, and 12 electrons?
- A.
  
  12
- B.
  
  2
- C.
  
  13
- D.
  
  25
8.

Two isotopes of the same element have the same number of _____.
- A.
  
  Protons
- B.
  
  Neutrons
- C.
  
  Electrons
- D.
  
  Atoms
9.

The atomic number of an element tells us the number of protons and neutrons in a specific isotope.
- A.
  
  False
- B.
  
  True
10.

The atomic number is the number of protons in the nucleus and it also identifies the element.
- A.
  
  True
- B.
  
  False
11.

What makes isotopes of the same element different from each other?
- A.
  
  The number of protons in their nucleus.
- B.
  
  The number of neutrons in their nucleus.
- C.
  
  The number of electrons they have.
12.

Which is the correct symbol for an oxygen atom with 8 protons, 9 neutrons and 8 electrons?
- A.
  
  16 O 8
- B.
  
  17 O 8
- C.
  
  18 O 8
- D.
  
  18 O 9
13.

A neutral atom has 22 electrons and 24 neutrons. What is its mass number?
- A.
  
  46
- B.
  
  24
- C.
  
  45
- D.
  
  22
14.

A chemical symbol represents the _____ of an element.
- A.
  
  Name
- B.
  
  Reaction
- C.
  
  Group
- D.
  
  Structure
- E.
  
  Type
15.

Atoms of the same element with different numbers of neutrons are called _____.
- A.
  
  Isotopes
- B.
  
  Metals
- C.
  
  Metalloids
- D.
  
  Radioactive
- E.
  
  Transition elements
16.

A particle that moves around the nucleus is _____.
- A.
  
  An electron
- B.
  
  A proton
- C.
  
  A quark
- D.
  
  A neutron
- E.
  
  An ion
17.

A certain atom has 26 protons, 26 electrons, and 30 neutrons. Its mass number is _____.
- A.
  
  56
- B.
  
  30
- C.
  
  52
- D.
  
  26
18.

The charge on a proton is _____.
- A.
  
  Positive
- B.
  
  Negative
- C.
  
  Neutral
- D.
  
  The same as for an ion
19.

The number of protons in an atom is called the _____.
- A.
  
  Atomic number
- B.
  
  Electron
- C.
  
  Proton
- D.
  
  Mass number
- E.
  
  Neutron
20.

The charge on a neutron is _____.
- A.
  
  Positive
- B.
  
  Negative
- C.
  
  Neutral
- D.
  
  The same as for an ion
21.

The charge on an electron is _____.
- A.
  
  Positive
- B.
  
  Negative
- C.
  
  Neutral
- D.
  
  The same as for an ion
22.

The central core of an atom is called the _____.
- A.
  
  Nucleus
- B.
  
  Atomic number
- C.
  
  Proton
- D.
  
  Electron
- E.
  
  Neutron
23.

The mass of a(n) _____ is about equal to the mass of a proton.
- A.
  
  Neutron
- B.
  
  Atomic number
- C.
  
  Electron
- D.
  
  Nucleus
24.

The total number of protons and neutrons in an atom is the atom’s _____.
- A.
  
  Mass number
- B.
  
  Atomic number
- C.
  
  Weight