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7A 7.3 Chemical Formulae of Molecular Elements a ...

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  • What is the number in a chemical formula that tells you how many atoms of an element are there in a molecule called?
    Subscript
  • How many types of atoms and the total number of atoms are present in an ozone molecule?
    1 type of atom, 3 atoms in total
  • An oxygen molecule is made up of ………… oxygen atoms.
    two
  • The atoms that form a molecule are either from the same ………………… or from different elements .
    element
  • How many atoms are there in this molecule?
    21
  • How many types of atoms are there in this molecule?
    3
  • The ____________________  of a molecule shows the numbers and types of atoms it contains.
    chemical formula
  • A water molecule is made up of ………. oxygen atom and ……….. hydrogen atoms.
    1, 2
  • Which of the following chemical formulas contains the most types of atoms?
    NaHCO3
    CO
    H2O
    C6H12O6
  • Which of the following chemical formulas contains the most total number of atoms?
    H2O
    C3H8
    CO
    CO2
  • How many atoms are there in this molecule?
    7
  • A________________ is made up of two or more atoms chemically combined together.
    molecule
  • A molecule which is made up of atoms from different elements is called …………………
    compound
  • Which of the answers below would be a correct chemical symbol of an element?
    be
    Be
    bE
    BE
  • One molecule of the compound carbon tetrachloride consists of one carbon atom and four chlorine atoms chemically combined. What is its chemical formula?
    CCl4
  • How many types of atoms are there in this molecule?
    3