Atoms from more than 100 elements make up all the matter in the universe. The atoms of two or more elements can come together to make a molecule. When molecules come together, they make a chemical compound. They can form in many different ways and there are millions of compounds that have already been discovered. In chemical reactions, compounds can also be broken down and changes can be made to the way the atoms bond. Compounds have many different characteristics. Compounds can be classified as molecular or ionic. They can also be classified as organic or inorganic. Organic and inorganic compounds can be further classified into subclasses. Is this an accurate summary? Why or why not? (A) Yes; the summary clearly and precisely highlights important facts about how chemical compounds form and other characteristics. (B) Yes; the summary correctly identifies common chemical compounds and explains how to make formulas using compounds. (C) No; the first sentence of the summary incorrectly explains that atoms make up all matter found in the universe. (D) No; the last sentence falsely states that both organic and inorganic compounds can be divided into subclasses when only organic compounds can be.