Van der Waals forces occur between nonpolar molecules and are weaker attractions than covalent bonds.
Indicate whether this statement is true or false.
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Question 2) An individual hydrogen bond in a sample of water would be described as
A. strong and intramolecular.B. strong and intermolecular.C. weak and intramolecular.D. weak and intermolecular.
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Question 3) Hydrogen bonds form between molecules containing _________ bonds; the hydrogen bond is between a hydrogen atom of one molecule and a partially _________ charged atom of another.
A. polar covalent; negatively B. polar covalent; positively C. nonpolar covalent; positively D. nonpolar covalent; negatively E. ionic; positively
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Question 4) Oxygen is more electronegative than carbon.
Indicate whether this statement is true or false.
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Question 5) Any molecule that contains a polar bond within it is a polar molecule.
Indicate whether this statement is true or false.
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Question 6) Isomers of the same molecule have identical chemical properties.
Indicate whether this statement is true or false.
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Question 7) What is the number of covalent bonds that an atom of nitrogen can form within a molecule?
A. 1B. 2C. 3D. 4
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Question 8) Consider an atom with four electrons in its outer shell. If that atom is covalently bound to three other atoms within a molecule, then it is
A. in a double bond with one atom and in single bonds with two atoms.B. in a single bond with one atom and in double bonds with two atoms.C. in a triple bond with one atom and in single bonds with two atoms.D. in double bonds with all three atoms.E. in single bonds with all three atoms.
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Question 9) Which of the following is not one of the four most common elements in the body?
A. Oxygen B. Nitrogen C. Hydrogen D. Carbon E. Calcium
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Question 10) A double covalent bond involves
A. the sharing of one pair of electrons.
B. the sharing of two pairs of electrons.
C. the donation of one pair of electrons.
D. the donation of two pairs of electrons.
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