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Unit 1 - Atoms and Matter

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  • How many oxygen atoms are in 3CO₂?
    6
  • How many oxygen atoms are in H₂O₂?
    2
  • How many total atoms are in NaCl?
    2
  • How many atoms are in 3MgO?
    6
  • How many total atoms are in 6Ca(OH)₂?
    30
  • How many oxygen atoms are in C₆H₁₂O₆?
    6
  • How many oxygen atoms are in 3Ca(NO₃)₂?
    18
  • How many atoms are in O₂?
    2
  • Is boiling water physical or chemical?
    Physical
  • What type of change occurs when paper burns?
    Chemical
  • How many atoms are in CO₂?
    3
  • How many atoms are in Al₂(SO₄)₃?
    17
  • How many carbon atoms are in 5CH₄?
    5
  • How many oxygen atoms are in 2Na₂SO₄?
    8
  • Is fireworks exploding physical or chemical?
    Chemical
  • How many total atoms are in 2Al₂(CO₃)₃?
    28
  • How many total atoms are in K₂CO₃?
    6
  • How many oxygen atoms are in Na₂SO₄?
    4
  • How many nitrogen atoms are in (NH₄)₃PO₄?
    3
  • Is rusting iron a physical or chemical change?
    Chemical
  • How many atoms are in 2O₂?
    4
  • How many atoms are in Mg(OH)₂?
    5
  • What type of change occurs when ice melts?
    Physical
  • How many atoms are in 5(NH₄)₂O?
    55
  • How many atoms are in Ca(OH)₂?
    5
  • How many total atoms are in Na₂O?
    3
  • How many hydrogen atoms are in 6H₂O?
    12
  • How many total atoms are in 4K₂CO₃?
    24
  • Is dissolving sugar in water a physical or chemical change?
    Physical
  • How many hydrogen atoms are in 4Mg(OH)₂?
    8
  • Is breaking glass physical or chemical?
    Physical
  • How many oxygen atoms are in Ca(NO₃)₂?
    6
  • How many hydrogen atoms are in 4NH₃?
    12
  • How many total atoms are in Fe(OH)₃?
    7
  • How many oxygen atoms are in Al₂(CO₃)₃?
    9
  • Is breaking food down through saliva physical or chemical?
    Chemical
  • How many atoms are in MgO?
    2
  • How many carbon atoms are in CH₄?
    1
  • How many hydrogen atoms are in 2Fe(OH)₃?
    6
  • Is chopping wood physical or chemical?
    Physical
  • How many total atoms are in 2H₂O?
    6
  • How many atoms are in H₂O?
    3
  • How many hydrogen atoms are in (NH₄)₂O?
    8
  • How many oxygen atoms are in 2C₆H₁₂O₆?
    12
  • How many atoms are in 2Al₂(SO₄)₃?
    34
  • Is baking a cake physical or chemical?
    Chemical
  • How many nitrogen atoms are in 3(NH₄)₃PO₄?
    9
  • How many hydrogen atoms are in NH₃?
    3
  • How many total atoms are in 4Na₂O?
    12
  • How many atoms are in 2NaCl?
    4
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