Science is nothing but a part of nature the .laws of physics and chemistry makes science one of the most amazing thing. their is no magic the rules of science only makes it possible .science is a good friend but a bad master. science when used in a good way gives us good result and when used badly results is can be a very good is not a subject to read but to understand it .
         i hope this will  help u.  
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 the definition of science is "knowledge attained through study or practice," or "knowledge covering general truths of the operation of general laws, esp. as obtained and tested through scientific method [and] concerned with the physical world."