Gastritis is often caused by the gastric mucosa failing to produce the right amounts of gastric juices, the MUSC Digestive Disease Center reports. Sometimes an endoscopic exam reveals the stomach's mucosal layer to be inflamed and swollen. The exam may even show bleeding areas in the stomach.
Daltonâs atomic theory stated that: All the matter is made of atoms which are tiny particles and indivisible. All the given atom of the element is identical in mass, size, shape, and in other properties. All different elements have different types of atoms and also different in their mass, size, shape, and in other properties.
Dalton was an English chemist and teacher who used experimental evidence to form the atomic theory of matter: 1  All elements are composed (made up) of atoms. 2  All atoms of the same element are alike. 3  Atoms of different elements are different. 4  Atoms of different elements combine to form a compound. These atoms have to be in definite whole number ratios. For example, water is a compound made up of 2 atoms of hydrogen and one atom of oxygen. (A ratio of 2:1) Three atoms of hydrogen and 2 atoms of oxygen cannot combine to make water. Chemical reactions occur when atoms are separated, joined, or rearranged.