Wood's metal

Wood's metal is a special type of metal alloy made out of a mixture of metals like bismuth, lead, tin and cadmium. It's named after its inventor, British metallurgist Alfred Wood. The special thing about Wood's metal is that at room temperature, it's very soft and funny - it's kind of like a liquid, and it can flow like syrup. If it is heated, though, it hardens to be a strong and solid metal. Wood's metal is often used to make things like molds for statues and other objects, because it can be molded easily when it's warm, and then it'll hold its shape when it cools.