Atoms, Molecules, and Ions: Exercises

Test your knowledge in atoms, molecules and Ions

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QUESTION OF
Views #: 614
Questions #: 20
Time: 10 minutes
Pass Score: 80.0%
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Which of these formulas represent molecules

1 pts
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Explanation

Which of these formulas represent molecules?

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Explanation

What is the difference between CO and Co?

1 pts
  • (1) refers to carbon monoxide, a molecule composed of one carbon and one oxygen atom.
  • (2) refers to cobalt, a chemical element on the periodic table.
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CO
Co
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Explanation

What is the difference between

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What is the difference between H2O and H2O2 (hydrogen peroxide)?

  • (1) represents a molecule of water, consisting of two hydrogen atoms bonded to one oxygen atom.
  • (2) (hydrogen peroxide) represents a molecule of hydrogen peroxide, consisting of two hydrogen atoms bonded to two oxygen atoms.
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H2O2
H2O
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Explanation

Give the proper formula for each diatomic element

1 pts
  1. (1) Hydrogen
  2. (2) Nitrogen
  3. (3) Oxygen
  4. (4) Fluorine 
  5. (5) Chlorine
  6. (6) Bromine
  7. (7) Iodine
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N2
H2
O2
Cl2
F2
Br2
I2
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Explanation

In 1986, when Halley’s comet last passed the earth, astronomers detected the presence of S2 in their telescopes

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Why is sulfur not considered a diatomic element?

Answer: while sulfur can form diatomic molecules like S2, it's not considered a diatomic element under standard Earth conditions because it's not the most stable form of sulfur in those conditions

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What is the stem of fluorine used in molecule names?

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Explanation

What is the stem of selenium used in molecule names?

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Explanation

Give the proper name for each molecule

1 pts
  1. (1) PF3
  2. (2) TeCl2
  3. (3) N2O3
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tellurium dichloride
phosphorus trifluoride
dinitrogen trioxide
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Explanation

Give the proper name for each molecule

1 pts
  1. (1) NO
  2. (2) CS2
  3. (3) As2O3
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Arsenic Trioxide
Nitric Oxide
Carbon Disulfide
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Explanation

Give the proper name for each molecule

1 pts
  1. (1) XeF2
  2. (2) O2F2
  3. (3) SF6
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Xenon Difluoride
Sulfur Hexafluoride
Dioxygen Difluoride
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Explanation

Give the proper name for each molecule

1 pts
  1. (1) P4O10
  2. (2) B2O3
  3. (3) P2S3
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Diboron Trioxide
Tetraphosphorus Decoxide
ziphosphorus Trisulfide
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Explanation

Give the proper name for each molecule

1 pts
  1. (1) N2O
  2. (2) N2O4
  3. (3) N2O5
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Dinitrogen Pentoxide
Nitrous Oxide
Dinitrogen Tetroxide
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Explanation

Give the proper name for each molecule

1 pts
  1. (1) SeO2
  2. (2) Cl2O
  3. (3) XeF6
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Xenon Hexafluoride
Selenium Dioxide
Dichlorine Monoxide
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Explanation

Give the proper formula for each name

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  1. (1) Dinitrogen Pentoxide
  2. (2) Tetraboron Tricarbide
  3. (3) Phosphorus Pentachloride
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B4C
N2O5
PCl5
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Explanation

Give the proper formula for each name

1 pts
  1. (1) Nitrogen Triiodide
  2. (2) Diarsenic Trisulfide
  3. (3) Iodine Trichloride
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As2S3
NI3
ICl3
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Explanation

Give the proper formula for each name

1 pts
  1. (1) dioxygen dichloride
  2. (2) dinitrogen trisulfide
  3. (3) xenon tetrafluoride
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O2Cl2
XeF4
N2S3
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Explanation

Give the proper formula for each name

1 pts
  1. (1) Chlorine Dioxide
  2. (2) Selenium Dibromide
  3. (3) Dinitrogen Trioxide
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ClO2
N2O3
SeBr2
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Explanation

Give the proper formula for each name

1 pts
  1. (1) Iodine Trifluoride
  2. (2) Xenon Trioxide
  3. (3) Disulfur Decafluoride
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XeO3
IF3
S2F10
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Explanation

Give the proper formula for each name

1 pts
  1. (1) Germanium Dioxide
  2. (2) Carbon Disulfide
  3. (3) Diselenium Dibromide
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Explanation

✕
0
sin cos tan
sin-1 cos-1 tan-1 π e
xy x3 x2 ex 10x
y√x 3√x √x ln log
( ) 1/x % n!
7 8 9 + MS
4 5 6 – M+
1 2 3 × M-
0 . EXP ÷ MR
± RND C = MC
Keywords
Year 10