### element | metal:

Alkali metal
* All alkali metals react vigorously with water.
* Many alkali metals are important in medicine and diet.
* Most alkali metal has applications
* Most alkali metal has many applications
  - different applications
  - metals have many different applications.
  * ' are the chemical elements in group one of the periodic system. They are silver-coloured when pure, soft and have only one electron in the outermost shell. They react strongly with water and because of this, they have to be stored in petrol. Alkali metals are the first group in the periodic table. They are never found in nature uncombined because they are unstable and they react fast to other elements. They bond well with all elements except the noble gases. When they are in air, they quickly turn black. They have one valence electron
* are powerful reducing agents and form univalent compounds
* can explode if they are exposed to water.
* is metal
  - metallic elements
* react violently with water and produce heat and hydrogen gas that flames easily
  - water, halogens, and acids

Aluminium
* Most aluminium conducts electricity
* includes atoms.
* is chemical elements
  - light
* occur in various degrees of purity.

### element | metal | aluminium:

Pure aluminium
* is light, but it is too weak for most construction purposes
  - made from bauxite, a kind of rock that has aluminium oxide and many impurities
  - soft, ductile, corrosion resistant and has a high electrical conductivity
* silvery-white metal with many desirable characteristics.
* soft lightweight metal.
+ Aluminium, Occurrence and preparation: Metals
  * Pure aluminium is made from bauxite, a kind of rock that has aluminium oxide and many impurities. The bauxite is crushed and reacted with sodium hydroxide. The aluminium oxide dissolves. Then the aluminum oxide is dissolved in liquid cryolite, a rare mineral. Cryolite is normally produced artificially though. The aluminium oxide is electrolyzed to make aluminium and oxygen.

### element | metal:

Aluminum
* All aluminum has a high-quality polymer finish to protect surfaces from oxidation.
* Most aluminum contains aluminum
* Most aluminum has density
  - low density
  - lower density
  - strength
* Some aluminum has conductivity
  - lower conductivity
* Some aluminum increases calcium excretion
* Some aluminum increases urinary calcium excretion
  - is manufactured to be more rigid given the same thickness
* accounts for about three quarters of the materials used in making aircraft.
* cans Non-magnetic metal food and beverage cans.
* competes with materials such as steel, plastic and glass in the packaging market.
* concentrates as it goes up the food chain.
* containing antacids can cause constipation.
* costs about three times as much as steel.
* damages the root hairs and reduces the uptake of phosphorus and other nutrients.
* deals with focusing and memory, and zinc deals with behavior.
* disperses heat far better than a standard brass and tin radiator.
* expands and contracts more than copper.
* forms a very thin insulating oxide layer.
* has break strength
  - yield strength
* heats up quicker than steel in a standard convection oven.
* includes atoms.
* induces calcium loss and inhibits the absorption of fluoride.
* inhibits erythropoiesis in vitro
  - root growth and uptake of water and nutrients
* is elements
  - gray
  - light weight
* loves to contract when the temperature drops.
* reacts with carboplatin causing a precipitate.
* tears easily when stretched, during the stamping of complex shapes.
* tends to discolor and corrode.