Chrome browser

I like to use the Chrome browser to handle my G Mail and Blogger as they are all provided by Google. However, I find one feature of Chrome to be quite irritating. Whenever I download a document, Chrome  insist on saving a copy in the Download folder before opening it. If I wish to view the same copy again, Chrome will save another copy of the document. Sometimes, I find several copies of the same document in the Download folder. Is there a way to stop the saving of the copies in the Download folder?