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.
Click on both tabs and make sure students notice the differences in the movement of the atoms and molecules. 1  The atoms in a solid are so attracted to each other that they vibrate and donât move past each other. 2  The molecules of a liquid are attracted to each other, but move more freely and past one another.