More Essay Examples on Hydrogen Rubric
Because metals are very good conductors of electricity, the metal copper is commonly used in wires to conduct electricity, though silver and gold can be used as well they are very expensive. How these metals are drawn into those wires is another property which is ductility. This characteristic can happen because the orderly packing in the atoms allows them to slide over each other. In addition, metals are malleable. This means they can be rolled out into sheets. An example is the aluminium foil found in our kitchen. For the conductivity of heat, we can often find the application in the kitchen.
Most of the cooking appliances such as the frying pan are made out of metal. Lastly, metals are shiny. This is because when light shines on the free electrons they vibrate and are visibly shining. Gold is very shiny as it is unreactive; hence it is often used in jewellery. On the other hand, metals also have chemical properties. Metals tend to form cations which are positive ions by losing electrons to non-metals. Some metals such as potassium and iron effectively react with oxygen to form its oxide. This is why iron rusts. Before a metal can be used it first has to be extr