metals part 1 chem🖕🏿

Structure of metal

Metals loose valenced electron to become positively charged ions called cations.

The valenced electrons moves freely.

The metal structure is described as the closely packed metal ions together surrounded by a sea of delocalised electron

Alloy

Alloy is a mixture of elements(usually in molten state) of metal and non metals

Examples and use of alloy

Ex brass,copper,tin

Used to make a metal harder and resistant to corrosion and rust

Can also improve the physical appearance of the metal

Properties of metal

●high density,mpt and bpt because of the strong electrostatic force of attraction between atoms

●malleable amd ductile as the atoms are closely packed together and can slide over each other

●good thermal and electrical conductor as the delocalised electrons transfer heat and electricity

Properties of alloy

●does not rust or corrode

●are harder and less malleable(due to different sizes of atoms together)

●has a lower mpt than pure metal