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Chemistry Help HERE ONLY !!

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Ghost Of Highbury:
plz find it attached

Mg ? Mg2+ + 2 e-
S + 2e- ? S2-[

tnzgurl:
can someone help me understand the difference between evaporation and crystallization? and when you would use each one ?

Shogun:

its ionic bonding

and it should Mg+2 not -2
sorry it was a mistake.

Nanavel:
how do you know what is the suitable reagents for certain reactions ??

If they ask me do describe the structure of Diamond >>> I can either say :   " It has tetrahydral shap with four carbon atoms convalently bonded to other four carbon forming a gaint marcomolecular shap "
                                                                                                                                                                                          OR
                                                                                                     " It has tetrahydral structure with four oxygen atoms covalently bonded with a single atom of Silion forming a gaint marcomolecular shap "

Shogun:

--- Quote from: tnzgurl on May 30, 2009, 03:43:06 pm ---can someone help me understand the difference between evaporation and crystallization? and when you would use each one ?

--- End quote ---

evaoration is heating water and changin it to gas, crystallysation is when u evaporate until crystallisation poin(when crystals starts to form) then cool slowly.

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