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Chemistry Third Six Weeks Exam

Quiz by Cheryl Morton

High School
Chemistry (2017)
Texas Essential Knowledge and Skills (TEKS)

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15 questions
Show answers
  • Q1

    a chemical bond that occurs when atoms share electrons is an _________ bond?

    covalent

    magnetic

    polyatomic

    ionic

    300s
  • Q2

    what is the total number of atoms in the compound Ca(ClO3)2

    nine   9

    five  5

    three  3

    two  2

    300s
  • Q3

    The ______________ tells you how many electrons an atom must gain, lose, or share to become stable.

    ionic number

    atomic number

    oxidation number

    atomic mass

    300s
  • Q4

    what kind of chemical bond is formed when an equal exchange of electrons occur?

    covalent

    hydrate

    magnetic

    ionic

    300s
  • Q5

    Why do the noble gases NOT form compounds easily?

    they have empty outer energy levels

    their outer energy levels are completely filled with electrons

    they have seven electrons in the outer energy level

    they have no electrons

    300s
  • Q6

    what is the name of a binary compound made up of lithium and chlorine?

    lithium chlorate

    chlorine lithiate

    chlorine lithium

    lithium chloride

    300s
  • Q7

    Molecules are neutral

    true
    false
    True or False
    300s
  • Q8

    when an atom gains or loses electrons, the charged particle that results is called a molecule.

    false
    true
    True or False
    300s
  • Q9

    particles formed from the covalent bonding of atoms are called ions

    false
    true
    True or False
    300s
  • Q10

    an atom is chemically unstable when its outer energy level contains all the electrons it can hold

    false
    true
    True or False
    300s
  • Q11

    what is the name of the following polyatomic ion:           NH4

    nitrogen tetrahydride

    nitrate

    ammonium

    permanganate

    300s
  • Q12

    what is the name of the following ionic compound:       KMnO4

    Potassium manganese oxide

    Potassium Permanganate

    Manganese oxide

    Krypton Manganese

    300s
  • Q13

    how many electrons are needed in the outer energy levels of most atoms for the atom to be chemically stable?

    six  6

    two   2

    eight   8

    five  5

    300s
  • Q14

    in a chemical formula, the number of each type of atom in the compound is shown by numbers called___________________.

    chemical symbols

    subscripts

    oxidation numbers

    superscripts

    300s
  • Q15

    what is the correct name for K2SO4?

    potassium disulfide

    potassium sulfate

    potassium (II) sulfate

    potassium sulfide

    300s

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