Here is a summary of all the physical properties of metals. Metals are usually solid substances at room temperature . If you want to melt metals, you have to heat them up to a very high temperature - they have a high melting point. An exception to this is mercury. It is one of only two elements which is a liquid, but it still is a metal.
Most metals are pretty strong and hard.
This strength makes them useful for making things which need to be strong. Most metals are dense , which means heavy for its size. This heaviness can be useful for things like a hammer which needs a lot of weight. Some metals are not so dense, such as aluminium, which has different uses. Metals conduct electricity .