Can anyone tell me what an atom, molecule, Ion + -, covalent bond, meallic bond, element, compound,amorphous?

can anyone tell me what an atom, molecule, Ion + -, covalent bond, meallic bond, element, compound,amorphous?

THANKS EVERONE :)

Answers:
That's a lot of questions! Did you miss a whole semester of physics?
OMG! i'm currently stressed with this.GCSE's groan.tell me when you find out.
read here

http://en.wikipedia.org/wiki/atom.

http://en.wikipedia.org/wiki/covalent.

http://en.wikipedia.org/wiki/metallic_bo.

http://en.wikipedia.org/wiki/amorphous.

etc etc etc
Although someone has given you a site to look uo these topics, I'll just answer them anyway. The questions seems more chemistry-related.
Atom: Is the smallest part of an element that can ever exist and still possess the chemical properties of that element.
Molecule:Is the smallest particle of a substance that can normally exist alone and still retain the chemical properties of that substance, be it an element or a compound OR It is the minute particles from which the whole of a solid or a liquid or a gas is made up.
Ion: is any atom or group of atoms which possesses an electric charge Or Particles carrying quantities of electricity or charges.
Covalent bond; Is simply the type of bonding involving the sharing of electrons e.g Hydrogen molecule, water molecule etc
Metallic bond: Are bonds formed when metal atoms are held together in crystal lattice.This is so, because of the attraction between positive nuclei and mobile electrons giving rise to metallic bonds.
Element: Is a substance which cannot be split into other simpler units by an ordinary chemical process.
Compound: contains two or more elements chemically combined together in fixed proportions to form a new substance.
Amorphous: I'm not about the definition, but it is simply a substance without a definite crystalline structure e.g is the amorphous carbon-coal

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