As the title says any one can help me would be greatly appreciated
This is a discussion on What is a chemical and physical change of salt? within the Science Help forums, part of the Help and Advice category; As the title says any one can help me would be greatly appreciated...
chemical change for example could be NaCl + HgNO3 -> NaNO3 + HgCl
physical change is as simple as breaking salt crystals into smaller pieces
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Chemical: Melting it
Physical: Breaking it
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thts my friends threat he made it for me but thank you very much guys but any other than breaking or melting
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Dissolving would be a physical change.
A chemical change would be breaking it down by burning it.
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chemical changes will make it change to another substance. if you melt it, it will come back salt once it cools. but salt has an extremly high melting points so i doubt ull melt it. also dissolving would be a physical change cuz when the water dries, the same amount of salt is there. breaking it would also be a physical change because it will still be salt. the only chemical change is if you somehow split it into the different elements
If you run an electrical current through salt, you can separate the two base elements.
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Last edited by anthony1781; 12-24-2011 at 05:39 PM.
Chemical changes are hard to reverse. Not so with physical changes.