List five things you could do to make your work in the laboratory safer than it is now. Science is built up with facts, as a house is with stones. But a collection of facts is no more a science than a heap of stones is a house. If chemistry is just a matter of remembering a bunch of facts about matter and its structure, and memorizing how to do problems about matter and its changes, then it is like a heap of stones or a pile of brick or a stack of lumber. A house has a structure that is produced by ordered relationships among building materials.
Chemistry has a stucture that is produced by ordered relationships among concepts.
Matter is made of atoms. Atoms can join together to form molecules. An atom can be manipulated to give up electrons. These are all ideas we believe because of observations that have been made and facts that have been established. Concept maps or concept webs help us sort out the connection among concepts.