The difference is that metal gear solid games are just the game. Substances are the game with new features GHOST-OF-TSC: exactly
use an electric circuit and see if it is a conductor.
Sodium bromide has a bond between a metal and a nonmetal. The electronegativity difference between these substances is great. Thus, this compound has an ionic bond.
Metals are good heat and electricity conducters, most are solids, etc. Non-metals are not good conductors, made of mostly solids and gases, etc. And I don't think Semi-metal is even a term, I think the word your looking for is Metalloid which has properties of the other two.
Germanium chloride is a bond between a metal and a nonmetal. The electronegativity difference between these substances is great. Thus, this compound has an ionic bond.
Molecular substances have a lower melting and boiling point than Ionic. Also, molecular substances can be two non metals joined together where as Ionic it is a metal and nonmetal. Molecular substances have covalent bonds and Ionic have Ionic bonds.
Sodium CAN be a metal, just like copper CAN be a metal, but nothing is a metal, a metal is just the crystallized form of some substances. What I mean by this is, well lets take an example, you have zinc, copper, and other things in your body like that, they have a metal shape, but that does NOT mean that there is metal in our bodies. Metal is just a category of substances in solid form. So "metal" is just a solids category. So yes Sodium can be a metal. Sodium is a metal.
metal detector is sensor
metal is a substance and medal is something made out of metal
bronze and gun metal
Lead (Pb) is also a metal.
A molecule (covalent) compound is between a non-metal and a non-metal. An ionic compound is between a metal and a non-metal.