CHEM 121 Lecture Notes - Abbreviation, Combustibility And Flammability
Document Summary
The study of matter (anything that has mass and occupies space e. g a table or a piece of paper) and the changes it undergoes. Chemistry is also the study of the chemical and physical changes all matter undergoes. As matter undergoes change it can either gain or lose energy. Energy is the ability to do work to accomplish some change i. Biochemistry: the study of life at the molecular level. Organic chemistry: the study of life at molecular level. Inorganic chemistry: the study of matter containing other elements, not organic. How different tykes of matter, elements, compounds are categorized into different groups. Results in a change in composition and can be observed only through chemical reaction. Observed without changing the composition or identity of a substance t. tt. Produces a recognizable difference in the appearance of a substance without causing any change in its composition or identity. Conversion from one physical form to another (e. g melting ice).
