Chemistry Fundamentals Multiple Choice Questions Quiz

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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Chemistry Fundamentals Multiple Choice Questions Quiz - Quiz

Welcome to our Chemistry Fundamentals Quiz! This quiz is designed to test your understanding of the essential concepts in chemistry. Whether you're a student studying for an exam or someone interested in exploring the basics of chemistry, this quiz offers a comprehensive review of fundamental principles. Explore topics such as atomic structure, chemical bonding, periodic trends, and basic reactions through a series of engaging multiple-choice questions.

Each question is carefully crafted to cover key concepts in a clear and concise manner, ensuring an enriching learning experience for participants of all levels. By taking part in this quiz, you'll have the Read moreopportunity to assess your knowledge, identify areas for improvement, and strengthen your foundation in chemistry. Challenge yourself and embark on a journey through the fundamental principles that govern the world of chemistry. Let's dive into the Chemistry Fundamentals Quiz and discover the fascinating world of atoms, molecules, and reactions together!


Chemistry Fundamentals Questions and Answers

  • 1. 

    The particle that has the smallest mass is the

    • A.

      Electron

    • B.

      Proton

    • C.

      Nucleus

    • D.

      Ion

    • E.

      Neutron

    Correct Answer
    A. Electron
    Explanation
    Test 1

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  • 2. 

    The person given credit for developing the first modern periodic table is

    • A.

      Dalton

    • B.

      Democritus

    • C.

      Thomson

    • D.

      Mendeleev

    • E.

      Chadwick

    Correct Answer
    D. Mendeleev
    Explanation
    Test 1

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  • 3. 

    Two atoms are isotopes if they have

    • A.

      Different atomic numbers

    • B.

      The same mass number, but different atomic numbers

    • C.

      The same number of protons and neutrons

    • D.

      The same number of electrons, but a different number of neutrons

    • E.

      The same atomic number, but a different mass number

    Correct Answer
    E. The same atomic number, but a different mass number
    Explanation
    Test 1

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  • 4. 

    The element found in the periodic table in Group 4 and Period 6 is

    • A.

      Halfnium, Hf

    • B.

      Selenium, Se

    • C.

      Gadolinium, Gd

    • D.

      Chromium, Cr

    • E.

      Aluminum, Al

    Correct Answer
    A. Halfnium, Hf
    Explanation
    Test 1

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  • 5. 

    The element found in the periodic table in Group 6 and period 4 is

    • A.

      Halfnium, Hf

    • B.

      Selenium, Se

    • C.

      Lithium, Li,

    • D.

      Gadolinium, Gd

    • E.

      Chromium, Cr

    Correct Answer
    E. Chromium, Cr
    Explanation
    Test 1

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  • 6. 

    Which of the following matches of group number and common name is incorrect?

    • A.

      Group 2 - Alkaline Earth Metals

    • B.

      Group 6 - Lanthanides

    • C.

      Group 1 - Alkali Metals

    • D.

      Group 17 - Halogens

    • E.

      Group 18 - Noble Gases

    Correct Answer
    B. Group 6 - Lanthanides
    Explanation
    Test 1

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  • 7. 

    Which of the following matches of group number and common name is incorrect?

    • A.

      Group 7 - Transition Metals

    • B.

      Group 2 - Alkali Earth Metals

    • C.

      Group 17 - Halogens

    • D.

      Group 2 - Actinides

    • E.

      Group 18 - Noble Gases

    Correct Answer
    D. Group 2 - Actinides
    Explanation
    Test 1

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  • 8. 

    According to the periodic law, chemical properties are repeated at a regular interval when

    • A.

      Elements are listed in order of their atomic radius

    • B.

      Elements are listed in order of their date of discovery

    • C.

      Families of elements are listed in order

    • D.

      Periods are arranged in order

    • E.

      Elements are arranged in order of increasing atomic number

    Correct Answer
    E. Elements are arranged in order of increasing atomic number
    Explanation
    Test 1

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  • 9. 

    A metaloid in Period 3 is

    • A.

      Scandium

    • B.

      Aluminum

    • C.

      Germanium

    • D.

      Phosphorus

    • E.

      Silicon

    Correct Answer
    E. Silicon
    Explanation
    Test 1

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  • 10. 

    A nonmetal in Period 6 is 

    • A.

      Astatine

    • B.

      Iodine

    • C.

      Polonium

    • D.

      Radon

    • E.

      Rubidum

    Correct Answer
    D. Radon
    Explanation
    Radon is a radioactive element that has no taste and no color. The actual contact with Radon does not create any harm. Radon is the only non-metal element of period 6 of the periodic table.

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  • 11. 

    The atomic mass of barium is due to the number of

    • A.

      Neutrons and electrons in the nucleus

    • B.

      Electrons in the nucleus

    • C.

      Protons and neutrons in the nucleus

    • D.

      Protons and electrons in the atom

    • E.

      Protons in the nucleus

    Correct Answer
    C. Protons and neutrons in the nucleus
    Explanation
    Test 1

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  • 12. 

    The properties of elements repeat periodically if they are arranged by

    • A.

      Atomic mass

    • B.

      Atomic charge

    • C.

      Atomic number

    • D.

      Number of neutrons

    • E.

      Number of electrons

    Correct Answer
    C. Atomic number
    Explanation
    Test 1

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  • 13. 

    The atomic number is the number of

    • A.

      Protons in the nucleus

    • B.

      Neutrons in the nucleus

    • C.

      Protons plus the number of neutrons in the nucleus

    • D.

      Electrons plus the number of protons in the nucleus

    • E.

      Electrons plus the number of neutrons in the nucleus

    Correct Answer
    A. Protons in the nucleus
    Explanation
    Test 1

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  • 14. 

    Why does atomic radius decrease from left to right in a period?

    • A.

      Nuclear charge increases from left to right in a period

    • B.

      Nuclear charge decreases from left to right in a period

    • C.

      The number of energy levels increase from left to right in a period

    • D.

      The number of energy levels decreases from left to right in a period

    • E.

      The number of electrons decreases from left to right in a period

    Correct Answer
    A. Nuclear charge increases from left to right in a period
    Explanation
    Test 1

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  • 15. 

    Why does electron affinity increase from bottom to top in a chemical family?

    • A.

      Nuclear charge increases from bottom to top in a chemical family

    • B.

      Nuclear charge decrease from bottom to top in a chemical family

    • C.

      The number of energy levels increases from bottom to top in a chemical family

    • D.

      The number of energy levels decreases from bottom to top in a chemical family

    • E.

      The number of electrons increases from bottom to top in a chemical family

    Correct Answer
    D. The number of energy levels decreases from bottom to top in a chemical family
    Explanation
    Test 1

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  • 16. 

    Which of the following is the most reactive element?

    • A.

      Helium

    • B.

      Radon

    • C.

      Francium

    • D.

      Hydrogen

    • E.

      Ununoctium

    Correct Answer
    C. Francium
    Explanation
    Test 1

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  • 17. 

    Why is it easier to remove an electron from potassium than it is to remove an electron from calcium?

    • A.

      Potassium has a higher electron affinity

    • B.

      Potassium has a higher ionization energy

    • C.

      Potassium has a lower nuclear charge

    • D.

      Calcium has a lower electron affinity

    • E.

      Calcium is a metal, but potassium is not

    Correct Answer
    C. Potassium has a lower nuclear charge
    Explanation
    Test 1

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  • 18. 

    Which of the following is a practical use of radioisotopes?

    • A.

      Determining the age of old objects

    • B.

      Medical diagnosis

    • C.

      Production of electricity

    • D.

      All of the above

    • E.

      None of the above

    Correct Answer
    D. All of the above
    Explanation
    Test 1

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  • 19. 

    According to the Lewis model of the atom, the number of bonding electrons in a nitrogen atom is

    • A.

      1

    • B.

      2

    • C.

      3

    • D.

      5

    • E.

      7

    Correct Answer
    C. 3
    Explanation
    Test 1

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  • 20. 

    Which of the following atoms is believed to contain three lone pairs of electrons?

    • A.

      H

    • B.

      Al

    • C.

      B

    • D.

      C

    • E.

      Cl

    Correct Answer
    E. Cl
    Explanation
    Test 1

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  • 21. 

    Multivalent metals

    • A.

      Can form more than one ion, each with its own charge

    • B.

      Can exist in several different crystalline forms

    • C.

      Appear only in the representative metal groups

    • D.

      Contain more than one populated energy level

    • E.

      Form an ion whose charge is 2+ or greater

    Correct Answer
    A. Can form more than one ion, each with its own charge
    Explanation
    Test 1

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  • 22. 

    The systematic IUPAC name for HBr(aq) is

    • A.

      Aqueous bromine

    • B.

      Aqueous hydrogen bromide

    • C.

      Hypobromic acid

    • D.

      Hydrobromic acid

    • E.

      Bromic acid

    Correct Answer
    B. Aqueous hydrogen bromide
    Explanation
    Test 1

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  • 23. 

    Which of the following formulas does not represent a molecular compound?

    • A.

      CO2

    • B.

      CoCl2

    • C.

      SO2

    • D.

      PCl5

    • E.

      HCl

    Correct Answer
    B. CoCl2
    Explanation
    Test 1

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  • 24. 

    The concept of multiple covalent bonds is used to explain the molecular formula of 

    • A.

      O2

    • B.

      NaCl

    • C.

      C2H6

    • D.

      F2

    • E.

      NaOH

    Correct Answer
    A. O2
    Explanation
    Test 1

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  • 25. 

    The IUPAC name for CaCl2 is

    • A.

      Calcium chloride

    • B.

      Calcium (II) chloride

    • C.

      Calcium dichloride

    • D.

      Calcium chlorate

    • E.

      Monocalcium dichloride

    Correct Answer
    A. Calcium chloride
    Explanation
    Test 1

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  • 26. 

    Which of the following is the proper dot diagram for NaCl?

    • A.

      Refer to the test for this question

    • B.

      Option 2

    • C.

      Option 3

    • D.

      Option 4

    Correct Answer
    A. Refer to the test for this question
    Explanation
    Test 1

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  • 27. 

    An example of a binary compound is

    • A.

      NaOH

    • B.

      O2

    • C.

      H2S

    • D.

      CaCO3

    • E.

      Co

    Correct Answer
    C. H2S
    Explanation
    Test 1

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  • 28. 

    A compound compoesd of sodium, sulfur, and oxygen would be named

    • A.

      Sodium peroxide

    • B.

      Sulfuric acid

    • C.

      Sodium sulfide

    • D.

      Sodium sulfate

    • E.

      Sodium hydroxide

    Correct Answer
    D. Sodium sulfate
    Explanation
    Test 1

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  • 29. 

    If the name of a chemical compound ends in "ide", the compound is

    • A.

      Acidic

    • B.

      Binary

    • C.

      Basic

    • D.

      An oxide

    • E.

      None of the above

    Correct Answer
    B. Binary
    Explanation
    Test 1

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  • 30. 

    A metallic element X forms a carbonate with the formula X(CO3)2. The corresponding fluoride compound of element X would have the formula

    • A.

      XF

    • B.

      XF2

    • C.

      X4F2

    • D.

      X4F

    • E.

      XF4

    Correct Answer
    E. XF4
    Explanation
    Test 1

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  • 31. 

    The substance NH3 is a very important industrial chemical. It is used directly as a fertilizer and is also used to produce many other useful chemicals. The IUPAC name of this substance is

    • A.

      Hydrogen nitride

    • B.

      Ammonia

    • C.

      Hydrogen peroxide

    • D.

      Octane

    • E.

      Ammonium

    Correct Answer
    B. Ammonia
    Explanation
    Test 2

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  • 32. 

    The IUPAC name for P2I4 is

    • A.

      Phosphorus iodide

    • B.

      Diphosphorus tetraiodide

    • C.

      Tetraphosphorus diiodide

    • D.

      Phosphorus pentaiodide

    • E.

      Dipotassium tetraiodide

    Correct Answer
    B. DipHospHorus tetraiodide
    Explanation
    Test 2

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  • 33. 

    Hydroselenic acid is a very toxic substance. Its chemical formula is

    • A.

      HSe

    • B.

      H2SeO

    • C.

      H2Se

    • D.

      H2SeO3

    • E.

      H2SeO4

    Correct Answer
    C. H2Se
    Explanation
    Test 2

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  • 34. 

    The IUPAC name for KMnO4 is

    • A.

      Krpyton manganese tetraoxide

    • B.

      Potassium manganate

    • C.

      Potassium permanganate

    • D.

      Potassium manganese oxide

    • E.

      Potassium monomanganese tetraoxide

    Correct Answer
    C. Potassium permanganate
    Explanation
    Test 2

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  • 35. 

    The formula for carbon tetrachloride is

    • A.

      C1Cl4

    • B.

      C4Cl4

    • C.

      C1Cl

    • D.

      CCl4

    • E.

      C4Cl1

    Correct Answer
    D. CCl4
    Explanation
    Test 2

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  • 36. 

    What is the formula for zinc chloride?

    • A.

      ZnCl

    • B.

      ZnCl2

    • C.

      Zn1Cl1

    • D.

      Zn1Cl2

    • E.

      Zn2Cl1

    Correct Answer
    B. ZnCl2
    Explanation
    Test 2

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  • 37. 

    What is the formula for copper(II) nitrite?

    • A.

      Cu2(NO3)

    • B.

      Cu(NO3)2

    • C.

      Cu(NO2)2

    • D.

      Cu2(NO2)

    • E.

      Cu(NO3)

    Correct Answer
    C. Cu(NO2)2
    Explanation
    Test 2

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  • 38. 

    An example of a binary compound is

    • A.

      NaOH

    • B.

      O2

    • C.

      H2S

    • D.

      CaCO3

    • E.

      Co

    Correct Answer
    C. H2S
    Explanation
    Test 2

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  • 39. 

    If XF2 is the correct formula for a metallic fluoride, then the formula for the oxide of X is

    • A.

      X2O

    • B.

      XO

    • C.

      XO4

    • D.

      XO2

    • E.

      X2O2

    Correct Answer
    B. XO
    Explanation
    Test 2

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  • 40. 

    Which of the following metals would most likely oxidize if a clean metal surface is exposed to the atmosphere?

    • A.

      Aluminum

    • B.

      Iron

    • C.

      Gold

    • D.

      Silver

    • E.

      Zinc

    Correct Answer
    A. Aluminum
    Explanation
    Test 2

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  • 41. 

    The kinetic molecular theory includes all of the following except

    • A.

      Molecules attract one another

    • B.

      Particles are small compared to the volume they occupy

    • C.

      Molecules move in straight line motion

    • D.

      Molecules collide elastically with one another

    • E.

      Molecules collide elastically with surrounding objects

    Correct Answer
    C. Molecules move in straight line motion
    Explanation
    Test 2

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  • 42. 

    The reaction of silver nitrate with zinc would be classified as a 

    • A.

      Combustion reaction

    • B.

      Synthesis reaction

    • C.

      Double displacement reaction

    • D.

      Decomposition reaction

    • E.

      Single displacement reaction

    Correct Answer
    E. Single displacement reaction
    Explanation
    Test 2

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  • 43. 

    Which of the following combinations would result in the formation of a precipitate? 

    • A.

      Acetic acid and potassium hydroxide solutions

    • B.

      Magnesium nitrate and sodium sulfide solutions

    • C.

      Sulfuric acid and barium hydroxide solutions

    • D.

      Sodium sulfate and copper(II) chloride solutions

    • E.

      Sodium chloride and ammonium nitrate solutions

    Correct Answer
    C. Sulfuric acid and barium hydroxide solutions
    Explanation
    Test 2

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  • 44. 

    Hydrogen can be used as an alternative fuel for automobiles. Classify the following chemical reaction: 2H2 + O2 = 2H2O

    • A.

      Combustion reaction

    • B.

      Decomposition reaction

    • C.

      Single displacement

    • D.

      Double displacement

    • E.

      Simple decomposition

    Correct Answer
    A. Combustion reaction
    Explanation
    Test 2

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  • 45. 

    Which of the following always indicates that a chemical reaction has taken place?

    • A.

      Production of a gas

    • B.

      Absorption of heat

    • C.

      Change in colour

    • D.

      Appearance of a new substance

    • E.

      Production of heat

    Correct Answer
    D. Appearance of a new substance
    Explanation
    Test 2

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  • 46. 

    Classify the following reaction: Cl2 + ZnI2 = ZnCl2 + I2

    • A.

      Combustion

    • B.

      Synthesis

    • C.

      Decomposition

    • D.

      Single displacement

    • E.

      Double displacement

    Correct Answer
    D. Single displacement
    Explanation
    Test 2

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  • 47. 

    Classify the following reaction: 2NaClO3 = 2NaCl + 3O2

    • A.

      Combustion

    • B.

      Synthesis

    • C.

      Decomposition

    • D.

      Single displacement

    • E.

      Double displacement

    Correct Answer
    C. Decomposition
    Explanation
    Test 2

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  • 48. 

    Which metal would not displace gold, Au, from a compound?

    • A.

      Copper, Cu

    • B.

      Potassium, K

    • C.

      Lithium, Li

    • D.

      Magnesium, Mg

    • E.

      None of the above

    Correct Answer
    E. None of the above
    Explanation
    Test 2

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  • 49. 

    Stainless steel is harder than pure iron because

    • A.

      It is an alloy

    • B.

      It is metallic

    • C.

      The electrons in it are free to move

    • D.

      All of the above

    • E.

      None of the above

    Correct Answer
    A. It is an alloy
    Explanation
    Test 2

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  • 50. 

    The greenhouse effect is caused by

    • A.

      Infrared radiation

    • B.

      Ultraviolet radiation

    • C.

      Water

    • D.

      Carbon dioxide

    • E.

      All of the above

    Correct Answer
    E. All of the above
    Explanation
    Test 2

    Rate this question:

Zohra Sattar Waxali |PhD (Chemistry) |
Chemistry
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.

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  • Current Version
  • Jul 16, 2024
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    Zohra Sattar Waxali
  • Jun 14, 2016
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