1. Explain how to create a Lewis Structure for an
covalent compound and tell
why the structure is an
important tool in Chemistry.
As an example, insert the
Lewis Structure for
ammonia (NH).

Hi. where is the graph?

It has to be b i hope this

Aphysical change is one that you can put in and remove like a ham sandwich. the stuff you put in there can be changem its not permanet. a chemical change is on that can't be change thats permanet. like when you make a cake and bake it. you can't get those ingredients back.