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Elements Compounds Mixtures

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  • True or False: only living things are made of atoms
    False - All things are made of atoms
  • True or False? Chlorine gas was used as a chemical weapon during World War 1.
    True
  • Element or Compound?
    Compound
  • Most common element found in the Universe.
    Hydrogen
  • A molecule of oxygen is made from ............. atoms of oxygen joined together.
    Two(2)
  • Table salt is an example of what?
    Compound
  • How many electrons in an oxygen atom?
    8
  • Magnesium and _____(how many) Sulfur = Magnesium sulfide (MgS)
    One (1)
  • What are the 3 particles that make-up the atom?
    protons, neutrons, and electrons
  • Baking soda is an example of what?
    Compound
  • The chemical symbol for .................. is C.
    carbon
  • A substance that is made of just one kind of atom.
    Element
  • Substance that are made up more than one kind of atom.
    Compound
  • The chemical symbol for .................. is Au.
    Gold
  • Two hydrogen atoms and one oxygen atom stuck together creates what molecule?
    Water (H2O)
  • Formulas show which elements from the periodic table are combined
    True
  • Lithium is the lightest of all the metals. It can float on water
    True
  • What is the symbol/formula for Carbon Monoxide?
    CO
  • What is the building block of all matter?
    Atoms
  • The chemical symbol for .................. is O.
    Oxygen
  • Have many different types of atoms have been made in laboratories?
    24
  • Element or Compound?
    Compound
  • Aluminum is an example of what?
    Element
  • The chemical symbol for .................. is Pb.
    Lead
  • Element with the smallest mass in the Periodic Table.
    Hydrogen
  • Can compounds be easily separated?
    No.
  • True or False? When burned, sodium will produce a yellow flame.
    True
  • What is the formula/symbol for Carbon Dioxide
    CO2
  • These particles orbit around the nucleus of an atom. What are they called?
    Electrons
  • The positive particles of an atom are
    Protons
  • What 2 particles are found in an atoms neucleus?
    Protons and neutrons
  • Most common metal found in the Earth's crust.
    Aluminium
  • The chemical symbol for .................. is Na.
    Sodium
  • Group of atoms joined tightly together.
    Molecule
  • Compound or Mixture?
    Mixture
  • Pizza is an example of a
    mixture
  • Different elements or compounds that are not joined together chemically.
    Mixture
  • Compound or Mixture?
    compound
  • If a substance cannot be separated or broken down into simpler substances by chemical means is a what...
    element
  • Sodium is all over Earth. Its easy to find in its pure form.
    False - is never naturally found in its pure form
  • Particles in an atom that are neutral and have no charge are
    Neutrons
  • True or False? Sodium is soft enough to cut with a butter knife at room temperature.
    True
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