Help!!?

can anyone list four step involved in the extaction and purification of nickel and state weather they involved physical or chemical changes. please explain your choice in each case.

Answer:
You can find all informations on :
http://en.wikipedia.org/wiki/nickel...
Look at :extraction and purification
I thing that is enought
Step 1. Open your textbook.
Step 2. Look in the index.
Step 3. Look for "Nickel"
Step 4. Open to the correct page and READ.

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