1. Which best describes what happens to the atoms during the combustion of
ethanol?

The answer for #3 is c but i don't know why

Margaret wants to make an orange flavored drink by stirring powdered drink mix into a glass of water. she doesn't like drinks that have small clumps of powdered solid in them, so she wants the drink to be a perfect solution. what factors should margaret not consider when deciding how much powder to add to her glass of water?

The difference between the atomic number of an element and the element’s atomic mass is the number of ions.