Your employer is required by law to report. within 7 days of when you report your. accident or injury. If they do not do this, and they do not give you a phone number. for the insurance company to call, you can. call the workersâ compensation (WC) hotline for assistance at.
In A Nutshell. Atoms are the smallest pieces of matter; they are made of particles (protons and electrons). When atoms are grouped together, these groups are called molecules (the smallest pieces of compounds). You probably think of atoms, molecules, and particles as all being extremely small pieces of matter.
General Chemistry/Atoms and Molecules - Atoms. 1  An atom is the smallest unit of matter that has the properties of an element. 2  The nucleus, composed of protons and neutrons, is at the center of an atom. 3  The electron has an electric charge equal but opposite the proton (that is, they cancel).