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8th Sci Unit 7

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    Questions from Unit 7 of 8th Science
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  • What is a substance made up of only one type of atom?
    An element
  •  15
  • What is the tiniest particle of an element that can exist?
    An atom
  •  15
  • What is a group of atoms bonded tightly together?
    A molecule
  •  15
  • What is a substance made up of more than one kind of atom bonded together?
    A compound
  •  15
  • What is a column in the Periodic Table?
    A group
  •  15
  • What is a row in the Periodic Table?
    A period
  •  15
  • What are the symbols for these elements? Magnesium, oxygen, and hydrogen
    Mg, O, H
  •  15
  • What are these elements? N, Na, Si
    Nitrogen, Sodium, Silicon
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  • Match the element to its symbol. Calcium, carbon, copper, cobalt. C, Ca, Co, Cu
    Carbon - C, Calcium - Ca, Cobalt - Co, Copper - Cu
  •  15
  • What is the name for the compound containing potassium and chlorine?
    Potassium chloride
  •  15
  • Which elements are found in the compound aluminium sulfate?
    Aluminium, sulfur, and oxygen
  •  15
  • What's the name for the compound containing calcium, carbon, and oxygen?
    Calcium carbonate
  •  15
  • Which element is found in three of these substances?
    Oxygen (O)
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  • Name the metal found in one of these substances.
    Magnesium (Mg)
  •  15
  • How many of each atom is found in these substances?
    Based on the numbers
  •  15
  • Which are elements and which are compounds?
    Elements - sodium, carbon, hydrogen; Compounds - water, sulfur dioxide
  •  15