I want to thank your team (Jeff) for finding a new writer when you were unable to reach my existing writer to revise my paper. I appreciate your professionalism and efforts. Thanks
A change in (matter or substance) which does not alter the chemical properties of the matter.
A physical change is a type of change in which the form of matter (substance) is altered but one substance is not transformed into another different substance. For example, if we carve a piece of wood into a baseball bat, it will still burn in a fire and float on water. It remains wood, so it is a physical change.
(b) Crushing a can : after crushing can changes its shape, size but it still remain Aluminum so it is a physical change.
Burning of wood is a chemical change because on burning wood changes to a totally different new products (ash, smoke and carbon dioxide).
Here is video of a lab with a number of examples of both chemical and physical changes.
video from: Noel Pauller
Simple explanation with good results can be on this site http://chemistry.about.com/od/matter/a/10-Physical-Change-Examples.htm
Show more
Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.
You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.
Read moreEach paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.
Read moreThanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.
Read moreYour email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.
Read moreBy sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.
Read more