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.
Define molecule and molecular formula (6.2) A molecule is neutral group of atoms held together by covalent bonds. A molecular formula shows the types and numbers of atoms combined in a single molecule of a molecular compound, such as H2O (type: hydrogen and oxygen, number: 2 H, 1 O).