Suppose you have an internet friend who is studying chemistry just like you are. your friend claims the change from liquid water to water vapor is a chemical change. write a brief email that might convince your friend otherwise

when insulating materials rub against each other, they may become electrically charged . electrons , which are negatively charged, may be 'rubbed off' one material and on to the other. the material that gains electrons becomes negatively charged. the material that loses electrons is left with a positive charge.

radiation warms things up temp rises convection currents air circ windy weather