Back spasms can cause arm and hand pain if the spasms hinder communication between the spine and the nerves in the upper extremities. According to WebMD, pinched nerves in the upper or cervical spine often trigger pain, tingling, numbness or reduced strength in the shoulders, arms or hands. Continue Reading.
Best Answer: An atom can be any one of the elements. A molecule is a combination of atoms into a single substance. A compound is a molecule that includes atoms of two different elements. Organelles are parts of cells made up of many, many atoms, such as the mitochondria. Elements are the simpliest form of complete matter, for example a single hydrogen (H) atom.
Atoms are really small! Some atoms have more protons, neutrons, and electrons, and some have fewer. Depending on how many protons and electrons an atom has, the atom behaves differently. The simplest atoms have just one proton and one electron-that's a hydrogen atom. A bunch of these atoms together make hydrogen gas. More complicated atoms have more protons, more neutrons, and more electrons.