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Topic: The Mass Of An Atom  (Read 3120 times)

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Offline Kax0r

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The Mass Of An Atom
« on: September 10, 2010, 02:53:50 PM »
Which of the following explains why the mass of an atom is less than the sum of the masses of its constituent subatomic particles?

a. entropy
b. conservation of matter
c. the mass defect
d. conservation of momentum]


Would SERIOUSLY appreciate some help. I'm 8/9 on my 10 part chemistry quiz and this question is the difference between and A and a B.
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Offline sjb

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Re: The Mass Of An Atom
« Reply #1 on: September 10, 2010, 03:37:48 PM »
Quote from: Kax0r on September 10, 2010, 02:53:50 PM
Which of the following explains why the mass of an atom is less than the sum of the masses of its constituent subatomic particles?

a. entropy
b. conservation of matter
c. the mass defect
d. conservation of momentum]


Would SERIOUSLY appreciate some help. I'm 8/9 on my 10 part chemistry quiz and this question is the difference between and A and a B.

Have you tried searching for each of these terms on, for example wikipedia?
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Offline Kax0r

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Re: The Mass Of An Atom
« Reply #2 on: September 10, 2010, 03:48:54 PM »
Yes, and I'm so far very much leaning towards C but I'm looking for a little verification.
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Offline MrTeo

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Re: The Mass Of An Atom
« Reply #3 on: September 10, 2010, 06:19:53 PM »
Quote from: Kax0r on September 10, 2010, 03:48:54 PM
Yes, and I'm so far very much leaning towards C but I'm looking for a little verification.

You're right: part of the mass of the subatomic particles is converted into energy and used to bond them (nuclear interactions).
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Offline opti384

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    • In the Search for the Laws of Nature
Re: The Mass Of An Atom
« Reply #4 on: September 11, 2010, 06:52:09 AM »
Think about E=mc^2
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