The Chemistry Of Life Quiz! Trivia Test

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Akimamarshall
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  • 1/8 Questions
    Water is made of 1 oxygen molecule and _____ hydrogen atoms. - ProProfs

    Water is made of 1 oxygen molecule and _____ hydrogen atoms.

    • 3
    • 2
    • 1
    • 5
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About This Quiz


Do you know about the chemistry of life? Life functions through the specialized chemistry of carbon and water and builds largely upon four key groups of chemicals. These include lipids, carbohydrates, amino acids, and nucleic acids. The human body mass is comprised of four elements: oxygen, carbon, hydrogen, and nitrogen. If you are considering a quiz on life's chemistry, this is the quiz for you.

The Chemistry Of Life Quiz! Trivia Test - Quiz

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  • 2. 

    An acid has a pH below ______.

    • 7

    • 8

    • 9

    • 10

    Correct Answer
    A. 7
    Explanation
    An acid has a pH below 7 because pH is a measure of the concentration of hydrogen ions in a solution. Acids release hydrogen ions (H+) when dissolved in water, which increases the concentration of H+ ions and lowers the pH value. A pH below 7 indicates an acidic solution, while a pH above 7 indicates a basic or alkaline solution.

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  • 3. 

    The water molecule is _________ because there is an uneven distribution of electron within the molecule.

    • Uneven

    • Weird

    • Polar

    • Strange

    Correct Answer
    A. Polar
    Explanation
    The water molecule is polar because there is an uneven distribution of electrons within the molecule. This occurs because oxygen is more electronegative than hydrogen, causing the oxygen atom to pull the shared electrons closer to itself, creating a partial negative charge. The hydrogen atoms, on the other hand, have a partial positive charge. This polarity gives water its unique properties, such as its ability to dissolve many substances and its high boiling point.

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  • 4. 
    A base has a ph above _____. - ProProfs

    A base has a ph above _____.

    • 9

    • 8

    • 7

    • 10

    Correct Answer
    A. 7
    Explanation
    A base has a pH above 7 because pH measures the acidity or alkalinity of a substance on a scale of 0 to 14. A pH value below 7 indicates acidity, while a pH value above 7 indicates alkalinity. Therefore, a base, being alkaline in nature, will have a pH value above 7.

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  • 5. 

    The __________ is the smallest unit of matter.

    • Element

    • Atom

    • Molecule

    • Electron

    Correct Answer
    A. Atom
    Explanation
    An atom is the smallest unit of matter that retains the chemical properties of an element. It consists of a nucleus, containing protons and neutrons, surrounded by electrons. Elements are made up of atoms, and molecules are formed when atoms bond together. Electrons are subatomic particles that orbit the nucleus of an atom. Therefore, the correct answer is atom.

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  • 6. 

    Gold is an example of a ______.

    • Molecule

    • Element

    • Atom

    • Covalent bond

    Correct Answer
    A. Element
    Explanation
    Gold is an example of an element because it is a pure substance that cannot be broken down into simpler substances by chemical means. Elements are made up of only one type of atom, and gold is composed solely of gold atoms.

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  • 7. 

    The atom is made of 3 subatomic particles. The subatomic particle found in the nucleus with a positive charge is the ___________.

    • Electron

    • Neutron

    • Proton

    Correct Answer
    A. Proton
    Explanation
    The correct answer is proton because it is the subatomic particle found in the nucleus of an atom with a positive charge. Electrons have a negative charge and are found outside the nucleus, while neutrons have no charge and are also found in the nucleus.

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  • 8. 

    An _______ bond is a bond in which electrons are transferred.

    • Covalent

    • Ionic

    • Double

    Correct Answer
    A. Ionic
    Explanation
    Ionic bonds are formed when there is a complete transfer of electrons from one atom to another. This transfer occurs between a metal and a non-metal, resulting in the formation of positively charged ions (cations) and negatively charged ions (anions). The attraction between these oppositely charged ions creates the ionic bond. In contrast, covalent bonds involve the sharing of electrons between atoms, and double bonds specifically refer to the sharing of two pairs of electrons between atoms. Therefore, the correct answer is ionic.

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  • Mar 22, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Nov 14, 2009
    Quiz Created by
    Akimamarshall
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