You get 5 fg if you can answer all. I got most of them asnwered but unsure if I got the correct answer. Also everything is translate from Swedish to English, so it could be really wrong translated. Hope you get it anways. First to answer every questions correctly gets the FG.

Yeah so I've made an expirment: PET Plastic bottle, water and steelwool + oxygen

1. What has been formed/created in the bottle?
Rust

2. What substances has reacted in the bottle, what are the reactants?
I guess! -> Iron (steel wool), water and oxygen

3. Are some of the reactants part of a mixture?
Really unsure what they mean, but I think they mean if it's a heterogeneous or a homoogeneous mixture? I think: All the reactants, and it's a heterogenous mxiture.

4. What of the reactants is a molecule?
Water

5. What are the elements?
Oxygen and iron

6. In which physical states are the substances that react with each other, at the beginning of the lab?
Iron = solid, and the mixture with water made some parts go liquid (rust) oxygen is gas, water is liquid

7. Did something happend with the bottle?
No.

8. What may this formchange depend on - or if nothing happend, what do you think should/would happend? Explain which and why.

9. What, in the substances that act, it is being moved when it undergoes a chemical reaction, such as a rust?

This post was edited by pontushultman on Jan 19 2012 06:52am

I'm done

doesnt rust require an electrical charge to form?

1 Rust is formed, but small amounts of hydrogen gas may also be formed.

3 The gaseous components are a homogeneous mixture of gases. The liquids a homogeneous mix of solvents and solute.

4 Next, oxygen is a diatomic molecule as well as water.

5 If water reacts with a metal, then hydrogen gas must be formed for redox balance

7 The bottle should heat up ever so slightly

8 For form change, it depends on oxidation state (gaining and losing elections). If iron is oxidized by water (iron loses electrons), the iron atoms will go into solution (aq) and will no longer be solid

9 Electrons are being transfered when a chemical changes form ex: iron to rust oxygen accepts iron's electrons and makes new ionic bonds

Few pointers

while i think you know it is not so, you make it sound like water is a diatomic molecule as well

My b.

Oxygen the element is found in nature as a diatomic molecule.

Water is only found as a compound made from 1 part oxygen and 2 parts hydrogen.