Why would the compound magnesium oxide lose mass as it burns?

Say you have a container and you have to fill it up with water or any liquid, and then have to find it's mass and substance a...

I need to know how iron oxide is formed.. Can someone explain it to me in a kid way since I'm not a science genius.

Hi, I am doing my coursework and I have researched but it seems hard to find a understandable answer. So can anybody tell me ...

Protons, neutrons and electrons...what are their charges and relative masses?

which of these metals will replace aluminum in a solution containing an aluminum compound? tin, zinc, barium, or silver?

If there was a clock in a massive object say... Jupiter and there was a spacecraft that was very light sent into space and it...

explain why a solid ionic compound does not conduct electricity, but the compound will do so when melted or dissolved in water.

What is the name given to many of the elemnts that have more that one oxidation number?? is it isotopes?

This is an extra credit question for my chemistry class that I just started yesterday. If any one can give me a reliable webs...

Dumb question, I know.. But a house would count as architecture, right?