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Counting Atoms

Quiz by Kelly Stephens

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

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Measures 1 skill from
High School
Chemistry (2017)
Texas Essential Knowledge and Skills (TEKS)

112.35.c.8.e

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20 questions
Show answers
  • Q1

    Match the formula to the correct number of OXYGEN ATOMS:

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    Linking
    30s
    112.35.c.8.e
  • Q2

    Order these formulas from the smallest number of TOTAL atoms first to the largest number of atoms last.

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    Linking
    30s
    112.35.c.8.e
  • Q3

    How many TOTAL OXYGEN ATOMS are in this chemical equation?

    2 Al(OH)3  +  3 H2SO4  -->  1 Al2(SO4)3  +  6 H2O

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    30s
    112.35.c.8.e
  • Q4

    How many TOTAL OXYGEN ATOMS are in this chemical equation?

    1 CH4  +  2 O2  -->  1 CO2  +  2 H2O

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    30s
    112.35.c.8.e
  • Q5

    Place these compounds into the correct group:

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    30s
    112.35.c.8.e
  • Q6

    What is the big number in front of a compound called?

    superscript

    coefficient

    covalence

    subscript

    30s
    112.35.c.8.e
  • Q7

    What is the small number behind an element called?

    superscript

    subscript

    coefficient

    covalence

    30s
    112.35.c.8.e
  • Q8

    Type your answer with no spaces and no commas (ex: 1111)

    What are ALL of the coefficients for this chemical equation once it is correctly balanced?

    8 CO  +  _____ H2  -->  1 C8H18  +  8 H2O

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    30s
    112.35.c.8.e
  • Q9

    Type your answer with no spaces and no commas (ex: 1111)

    What are ALL of the coefficients for this chemical equation once it is correctly balanced?

    1 CH4  +  _____ O2  -->  1 CO2  +  2 H2O

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    30s
    112.35.c.8.e
  • Q10

    Type your answer with no spaces and no commas (ex: 1111)

    What are ALL of the coefficients for this chemical equation once it is correctly balanced?

    2 Na  +  1 Cl2  -->  _____ NaCl

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    30s
    112.35.c.8.e
  • Q11

    Type your answer with no spaces and no commas (ex: 1111)

    What are ALL of the coefficients for this chemical equation once it is correctly balanced?

    4 Al  +  3 O2  -->  _____ Al2O3

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    30s
    112.35.c.8.e
  • Q12

    Type your answer with no spaces and no commas (ex: 1111)

    What are ALL of the coefficients for this chemical equation once it is correctly balanced?

    _____ N2  +  3 H2  -->  _____ NH3

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    30s
    112.35.c.8.e
  • Q13

    What is the MISSING coefficient?

    1 Ca3(PO4)2  +  2 H2SO4  -->  _____ CaSO4  +  1 Ca(H2PO4)2

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    30s
    112.35.c.8.e
  • Q14

    What is the MISSING coefficient?

    1 Fe2O3  +  2 CO  -->  _____ Fe  +  2 CO2

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    30s
    112.35.c.8.e
  • Q15

    What is the MISSING coefficient?

    2 H2SO4  +  1 Pb(OH)4  -->  1 Pb(SO4)2  +  _____ H2O

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    30s
    112.35.c.8.e

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