Answers by visitors named: NHHS

Have you got the same stupid homework as me? it says on my sheet that for lvl 7 i have to use symbols from a peridoic table to get a symbol equasion? does that mean stuff like C02 and stuff? And plz explaing what u mean by the total of energy something so...

and what happenes when you mix sulphur and iron together with a cotton ball jammed in the test tube?????? I know it turns black but why does there have to be cotton wool blocking it????!!!! !?!?!?!?!?!?!?!?!?!?!!?!?!??!??!!?!?!???!!? And do i needed to se...

The total off energy and matter in the universe is constant, but that energy and matter are equivalent and can be interchanged- And how i translated that from geekspeak was that energy and matter are kinda like twins that change place, and that everything...