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Author Topic: What makes magnesium reactive?  (Read 20188 times)

Sam Lone

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What makes magnesium reactive?
« on: 31/10/2008 23:12:06 »
Sam Lone asked the Naked Scientists:

What makes magnesium reactive?

What do you think?


 

Offline miriam0920

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What makes magnesium reactive?
« Reply #1 on: 02/11/2008 00:05:11 »
The Periodic Table. ;D
 

lyner

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What makes magnesium reactive?
« Reply #2 on: 02/11/2008 09:16:43 »
A very short answer is that it has an 'outer shell' which is almost empty. The outer electrons are a long way from the nucleus. They are partially 'screened' from the attraction of the nucleus by the inner electrons. That makes them more likely to be attracted to another atom.
 

Offline Bored chemist

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What makes magnesium reactive?
« Reply #3 on: 02/11/2008 10:21:56 »
A small value for the first and second ionisation potentials and a small ionic radius so the lattice or solvation energies are high.
Incidentally, Mg was reactive before the periodic table was produced, so that can't be the reason.
 

Offline lightarrow

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What makes magnesium reactive?
« Reply #4 on: 02/11/2008 11:54:24 »
Every time someone asks "why is this chemical so reactive", I always wonder what it means. Is there a specific definition somwhere? Because I would have said that, in general, it depends on the kind of reaction.
 

Offline Bored chemist

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What makes magnesium reactive?
« Reply #5 on: 02/11/2008 14:19:13 »
It's alsways a relative term. Mg reacts with hot water (and slowly with cold water) most metals don't so it's though of as quite reactive, but less so than sodium which reacts violently with water. The energy relesaed when Mg reacts with, for example, oxygen, is larger than that released for a lot of other elements.
 

Offline lightarrow

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What makes magnesium reactive?
« Reply #6 on: 03/11/2008 08:14:26 »
It's alsways a relative term. Mg reacts with hot water (and slowly with cold water) most metals don't so it's though of as quite reactive, but less so than sodium which reacts violently with water. The energy relesaed when Mg reacts with, for example, oxygen, is larger than that released for a lot of other elements.
So, "reactive" means "reactive with water or oxygen"?
 

lyner

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What makes magnesium reactive?
« Reply #7 on: 03/11/2008 17:51:31 »
It's a bit like putting beers in order of niceness.
 

Offline Bored chemist

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What makes magnesium reactive?
« Reply #8 on: 03/11/2008 19:21:32 »
It's alsways a relative term. Mg reacts with hot water (and slowly with cold water) most metals don't so it's though of as quite reactive, but less so than sodium which reacts violently with water. The energy relesaed when Mg reacts with, for example, oxygen, is larger than that released for a lot of other elements.
So, "reactive" means "reactive with water or oxygen"?
No, it's just that reactive with one thing tends to mean reactive towards others. (and I don't want a whole list of counter-examples thankyou).
 

lyner

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What makes magnesium reactive?
« Reply #9 on: 03/11/2008 22:23:31 »
I think you're over reacting, BC.
Boom Boom
 

Offline lightarrow

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What makes magnesium reactive?
« Reply #10 on: 04/11/2008 07:26:34 »
I think you're over reacting, BC.
Boom Boom
Noo, it's a good boy!
 

Offline Make it Lady

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What makes magnesium reactive?
« Reply #11 on: 04/11/2008 21:32:33 »
Not the retinas aaaaaahgh! Thanks you 8B3, I'm so pleased that you saved up all that Magnesium and burnt it all in one go. Still got the blind spot.
 

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What makes magnesium reactive?
« Reply #11 on: 04/11/2008 21:32:33 »

 

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