Your doctor may need to change the doses of your medications or monitor you carefully for side effects. ... Metformin side effects can also affect other parts of the body. It can leave a metallic taste in the mouth, cause heartburn or headache, flushing of the skin, nail changes or muscle pain. More serious metformin side effects include chest pain or rash. ...
Early String Theory. The first attempt to construct a physical model of an atom was made by William Thomson (later elevated to Lord Kelvin) in 1867. The most striking property of the atom was its permanence.
An atom is the smallest particle of an element which may or may not be capable of independent existence. Dalton's idea of matter is known as John Dalton's atomic theory. Dalton first proposed his atomic theory in 1803. Matter is composed of very tiny indivisible particles called atoms.Atoms are incapable of being destroyed or created.According to Dalton's atomic theory the atom is the basic unit from which matter is constructed.n atom is the smallest particle of an element which may or may not be capable of independent existence. Dalton's idea of matter is known as John Dalton's atomic theory. Dalton first proposed his atomic theory in 1803. Matter is composed of very tiny indivisible particles called atoms.