Fire in Rm 4

Have you  seen a light up tea bag before?Well in my class my teacher Mrs stone and our class mate terry had done a light up tea bag.I thought they were going to set fire in the building,But they didn't. So what's solid? solid is a hard thing for example: ICE,Ice has  atom what is atom? atom are small things around us.So to switch to water into steam is by heat and energy.Solid only has small amount of energy.What about water? Water has the same atom but diffident amount of energy,The atom has  some space  to move around.Lucky last is gas,gas atom is very free they can go every where.


When we set the teabag on fire it flew up into the air. This happened because the air inside the teabag heated up and the atoms got more energy so they wanted to spread out more. The air of the tea bag was hotter  from the inside and the  air of  the out side  is not hot it kinda feels warm and has less energy.