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Ch.2 Chemistry of Life REVIEW

Quiz by Kate Downey

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48 questions
Show answers
  • Q1
    What is the relationship between the number of protons and electrons in a neutral atom?
    There are twice as many protons as electrons.
    There are an equal number of protons and electrons.
    There are twice as many electrons as protons.
    When added together, the number of protons and electrons equals the number of neutrons.
    60s
  • Q2
    A ____ is formed when two atoms share one or more pairs of electrons.
    ionic bond
    polar bond
    covalent bond
    hydrogen bond
    60s
  • Q3
    When a solution has more hydrogen ions than hydroxide ions, it is considered ____.
    ionized
    basic
    acidic
    neutral
    60s
  • Q4
    What type of carbohydrate is sucrose, or table sugar?
    polysaccharide
    disaccharide
    complex carbohydrate
    monosaccharide
    60s
  • Q5
    Which type of macromolecule provides long-term storage of energy and carbon?
    carbohydrates
    proteins
    nucleic acids
    lipids
    60s
  • Q6
    What macromolecule is shared by RNA and DNA?
    nucleic acids
    lipids
    phosphates
    amino acids
    60s
  • Q7
    The most basic unit of an element is:
    proton
    neutron
    electron
    atom
    60s
  • Q8
    Which of the following subatomic particles carries a negative charge?
    electron
    neutron
    proton
    nucleus
    60s
  • Q9
    Which of the following atoms is a negatively charged ion?
    An atom that becomes stable by gaining an electron
    A noble gas
    An atom that is stable without gaining or losing electrons
    An atom that becomes stable by losing an electron
    60s
  • Q10
    An ionic bond is most likely to form between:
    two positively charged ions.
    two uncharged atoms.
    two negatively charged ions.
    a negatively and a positively charged ion.
    60s
  • Q11
    A covalent bond is most likely to form between:
    two atoms, both of which typically become stable by losing an electron.
    a negatively and a positively charged ion.
    two atoms, both of which typically become stable by gaining an electron.
    two salts
    60s
  • Q12
    Atoms are the smallest unit of an element that retains its characteristic properties.
    True
    False
    60s
  • Q13
    When water molecules have a tendency to stick together making it difficult to break the surface of water what TWO properties cause this characteristic of water?
    cohesion & hydrogen bonds
    cohesion & adhesion
    adhesion & hydrogen bonds
    cohesion
    60s
  • Q14
    The nucleus of an atom contains protons and electrons.
    True
    False
    60s
  • Q15
    Typically, nitrogen atoms are composed of seven electrons, seven protons, and seven neutrons. An isotope of nitrogen could
    have more than seven electrons and more than seven protons
    be negatively charged
    have more than seven neutrons
    have more than seven protons.
    60s

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