What is a double bond? a. two covalent bonds between adjacent atoms in a molecule b. a total of two covalent bonds between molecules c. a total of two covalent bonds in a molecule d. two covalent bonds between adjacent molecules ( answer quickly. you in advance.)

A double bond, would basically be a covalent bond, polar or not, between 2 atoms in a given molecule, not connecting 2 molecules together, although the later is also a covalent bond. Yet the definition of it is the first one.

If you open the bottle of perfume then nothing but the smell will come out of it and yes it is a type of gas smell because it’s say it in english so i can understand better and you

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.