The Chemistry Of Life Quiz! Trivia Test
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Water is made of 1 oxygen molecule and _____ hydrogen atoms.
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3
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2
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1
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5
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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.
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- 2.
An acid has a pH below ______.
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7
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8
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9
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10
Correct Answer
A. 7Explanation
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.Rate this question:
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- 3.
The water molecule is _________ because there is an uneven distribution of electron within the molecule.
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Uneven
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Weird
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Polar
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Strange
Correct Answer
A. PolarExplanation
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.Rate this question:
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- 4.
A base has a ph above _____.
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9
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8
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7
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10
Correct Answer
A. 7Explanation
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.Rate this question:
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- 5.
The __________ is the smallest unit of matter.
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Element
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Atom
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Molecule
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Electron
Correct Answer
A. AtomExplanation
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.Rate this question:
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- 6.
Gold is an example of a ______.
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Molecule
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Element
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Atom
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Covalent bond
Correct Answer
A. ElementExplanation
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.Rate this question:
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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 ___________.
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Electron
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Neutron
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Proton
Correct Answer
A. ProtonExplanation
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.Rate this question:
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- 8.
An _______ bond is a bond in which electrons are transferred.
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Covalent
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Ionic
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Double
Correct Answer
A. IonicExplanation
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.Rate this question:
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Mar 22, 2023Quiz Edited by
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Nov 14, 2009Quiz Created by
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