Counting Atoms Worksheet - campbell.k12.ky.us
Name _____________________ Date ______ Bl ____
CLASSWORK ~ Practice Counting Atoms Worksheet
Directions for each problem
1) write down the different elements in each compound.
2) write down how many of that particular atom there are
3) how many atoms are there total in the compound.
Examples:
A) MgCl2 Mg – 1 B) 5 ZnSO4 Zn – 5
Cl – 2 3 total S – 5 30 total
O – 20
1) NaOH 2) 4 HNO3 3) MgCl2
4) 4 Li2O 5) 2 NaOH 6) Li2SO4
7) 3 H2O 8) NaC2H3O2 9) 3 Al2O3
10) NH4Cl 11) 5 ZnSO4 12) 7 C2S2
SUPER STAR CHALLENGE!
13) 2 Sr3(PO4)2 14) 4 Al(OH)3 15) Ca (C2H3O2)2
16) 4 Al2(SO3)3 17) 2 (NH4)3PO4 18) 4 Mg(OH)2
|Substance |Melting Point Temperature|Boiling Point - |
| | |Vaporization - |
| |- t - |Temperature |
| |(oC) |- t - |
| | |(oC) |
|Aluminum |659 |2,327 |
|Cobalt |1480 |2900 |
|Copper |1,083 |2,595 |
|Gold |1,063 |2,600 |
|Hydrogen |-259 |-253 |
|Lead |328 |1,750 |
|Manganese |1260 |2150 |
|Magnesium |650 |1110 |
|Mercury |-38.8 |357 |
|Molybdenum |2620 |5560 |
|Nickel |1455 |2730 |
|Nitrogen |-210 |-196 |
|Oxygen |-219 |-183 |
|Tungsten |3370 |5930 |
Using the data table of melting and vaporization points on the left, create 5 questions that will require detailed data analysis. Be challenging! Provide answer in parenthesis.
Example: What state of matter will Aluminum be in at 500 oC? (solid)
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