February 24, 2017

Homework Help: science

Posted by Bri on Monday, January 10, 2011 at 4:01pm.

here are some science questions I've been trying to do for over an hour and i just cant figure them out! does a fan convert energy?
2.what happens to matter during both a physical and chemical change?
3.give an example of a simple closed system
4. in a fire, why does the wood have less mass after the fire is done?

thanks! :)

Answer This Question

First Name:
School Subject:

Related Questions

More Related Questions