A Test On Atoms, Elements, And Molecules!

Reviewed by Zohra Sattar Waxali

Zohra Sattar Waxali, PhD (Chemistry) |

Chemistry

Review Board Member

Dr. Zohra Sattar Waxali earned her doctorate in chemistry and biochemistry from Northwestern University, specializing in the metallomes of cardiac cells and stem cells, and their impact on biological function. Her research encompasses the development of arsenoplatin chemotherapeutics, stapled peptide estrogen receptor inhibitors, and antimicrobial natural products.

, PhD (Chemistry)

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A Test On Atoms, Elements, And Molecules! - Quiz

This quiz can be used as a pre-test for a unit on atoms, molecules, elements, and compounds. The quiz will, along with a post-test, serve as a method to determine how much the students have learned after the science unit has been taught.

Questions and Answers

1.

All matter consists of particles called________________.
- A.
  
  Units
- B.
  
  Atoms
- C.
  
  Cubes
- D.
  
  Pints
Correct Answer
B. Atoms

Explanation
Atoms are the fundamental particles that make up all matter. They are the building blocks of elements and molecules. Atoms are composed of protons, neutrons, and electrons. They combine in various ways to form different substances and give them their unique properties. Therefore, the correct answer is atoms.

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16
0
2.

Atoms consist of parts called protons, neutrons, and___________________.
- A.
  
  Electrons
- B.
  
  Haptons
- C.
  
  Neptons
- D.
  
  Wontons
Correct Answer
A. Electrons

Explanation
Atoms consist of parts called protons, neutrons, and electrons. Electrons are negatively charged particles that orbit around the nucleus of an atom. They are responsible for the chemical behavior of atoms, as they participate in chemical reactions and determine the bonding between atoms. Without electrons, atoms would not be stable and would not be able to form compounds.

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40
1
3.

Each proton has a ______________ electrical charge.
- A.
  
  Positive
- B.
  
  Negative
- C.
  
  Neutral
- D.
  
  Shocking
Correct Answer
A. Positive

Explanation
Each proton has a positive electrical charge. This is because protons are subatomic particles that carry a positive charge. They are found in the nucleus of an atom and are equal in magnitude to the negative charge of an electron. The positive charge of protons is essential for the overall electrical neutrality of an atom, as it balances out the negative charge of electrons.

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24
0
4.

Each electron has a ________________ electrical charge.
- A.
  
  Positive
- B.
  
  Negative
- C.
  
  Neutral
- D.
  
  Shocking
Correct Answer
B. Negative

Explanation
Electrons have a negative electrical charge. This is a fundamental property of electrons, which are subatomic particles that orbit the nucleus of an atom. The negative charge of electrons is equal in magnitude to the positive charge of protons, the other subatomic particles in an atom. This balance of positive and negative charges allows atoms to remain electrically neutral.

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26
0
5.

Each neutron has an electrically _________________ charge.
- A.
  
  Positive
- B.
  
  Negative
- C.
  
  Neutral
- D.
  
  Shocking
Correct Answer
C. Neutral

Explanation
Neutrons are subatomic particles that do not carry any electric charge. Unlike protons, which have a positive charge, and electrons, which have a negative charge, neutrons are electrically neutral. This means that they do not attract or repel other charged particles. Instead, they interact with other particles through the strong nuclear force, which binds the nucleons (protons and neutrons) in the atomic nucleus together.

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7
1
6.

The nucleus of an atom contains protons and _________________.
- A.
  
  Electrons
- B.
  
  Haptons
- C.
  
  Neutrons
- D.
  
  Wontons
Correct Answer
C. Neutrons

Explanation
The nucleus of an atom contains protons and neutrons. Protons have a positive charge, while neutrons have no charge. Together, protons and neutrons form the nucleus, which is the central part of an atom. Electrons, on the other hand, are found outside the nucleus in electron shells. Haptons and wontons are not relevant to the structure of an atom and are not found in the nucleus.

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9
0
7.

Electrons move around _______________ the nucleus.
- A.
  
  Inside
- B.
  
  Outside
- C.
  
  On top of
- D.
  
  Without
Correct Answer
B. Outside

Explanation
Electrons are negatively charged particles that orbit the nucleus of an atom, which contains positively charged protons and neutral neutrons. The electrons occupy specific energy levels or shells around the nucleus, determining the atom's chemical properties and how it interacts with other atoms.

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22
0
8.

An element is determined by the number of ___________________ (also known as its atomic number).
- A.
  
  Neutrons
- B.
  
  Electrons
- C.
  
  Protons
- D.
  
  Wontons
Correct Answer
C. Protons

Explanation
An element is determined by the number of protons, which is also known as its atomic number. The atomic number of an element uniquely identifies it and determines its position on the periodic table. The number of protons in an atom determines its chemical properties and its identity as a specific element. Neutrons, electrons, and wontons do not determine the identity of an element. Neutrons and electrons contribute to the overall properties and behavior of an atom, but they can vary within the same element, resulting in different isotopes and ions. Wontons are a type of food and have no relevance to the concept of atomic structure.

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19
7
9.

The modern periodic table is organized by _________________ atomic number.
- A.
  
  Increasing
- B.
  
  Decreasing
- C.
  
  Reducing
- D.
  
  Developing
Correct Answer
A. Increasing

Explanation
The modern periodic table is organized by increasing atomic number. This means that elements are arranged in order of their atomic numbers, which represents the number of protons in an atom's nucleus. This arrangement allows for elements with similar properties to be grouped together in the same column, known as a group or family. By organizing the periodic table in this way, it becomes easier to understand and predict the behavior and characteristics of different elements.

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16
2
10.

A ___________________ is a combination of two or more atoms that are held together by covalent bonds.
- A.
  
  Mole
- B.
  
  Ion
- C.
  
  Molecule
- D.
  
  Megatron
Correct Answer
C. Molecule

Explanation
A molecule is a combination of two or more atoms that are held together by covalent bonds. In a covalent bond, atoms share electrons to achieve a stable electron configuration. Therefore, a molecule is formed when atoms come together and share electrons, resulting in a stable structure. Molecules can be simple, consisting of only two atoms, or complex, with many atoms bonded together. Examples of molecules include water (H2O), carbon dioxide (CO2), and glucose (C6H12O6).

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4

Zohra Sattar Waxali |PhD (Chemistry) |

Chemistry

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Current Version
Oct 20, 2024

Quiz Edited by
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Expert Reviewed by
Zohra Sattar Waxali
Apr 11, 2010

Quiz Created by
Trevor Man

A Test On Atoms, Elements, And Molecules!

All matter consists of particles called________________.

Atoms consist of parts called protons, neutrons, and___________________.

Each proton has a ______________ electrical charge.

Each electron has a ________________ electrical charge.

Each neutron has an electrically _________________ charge.

The nucleus of an atom contains protons and _________________.

Electrons move around _______________ the nucleus.

An element is determined by the number of ___________________ (also known as its atomic number).

The modern periodic table is organized by _________________ atomic number.

A ___________________ is a combination of two or more atoms that are held together by covalent bonds.