To understand what bronze is, you need to check out some copper, some tin, and some bronze. You can get copper wire out of any broken electrical cord. Strip off the insulation, and there will be copper wire inside. Check out how soft and easy to bend it is!
Tin is also pretty easy to get. You can buy sheets of tin from Amazon. Bang on it and bend it a little to see how it behaves. Amazon will also sell you a bar of bronze. How does the bronze behave differently from the copper and tin?