Chemical Measurements Flashcards

1
Q

Conservation of mass

A
  • no atoms loss in reaction
  • mass same
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2
Q

Relative formula mass

A
  • sum of atomic mass
  • eg
    H2 = 2x1
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3
Q

Uncertainty

A

-range
- mean

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4
Q

Explains mass change

A
  • gas seems to gain mass
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