Intro to Chemistry

Dimensional Analysis-  is a problem-solving method that uses the fact that any number or expression can be multiplied by one without changing its value. Five factors are used during dimensional Analysis: Time  Mass Length Temperature  Electrical Current Units of the following: 1) The unit for Time- Second 2) Unit for Temperature- Kelvin 3)Unit for Length- Meter 4) Unit for Mass- Kilogram 5) Unit for Electrical Current- Ampere Famous scientist G.I Taylor uses Dimensional Analysis to estimate the size of the atom bomb       -Taylor came to the understanding that the bomb was around 20 kilotons In other words as stated in the video, the bomb could compare to around 20,000 tons of TNT  Through this video i learned 5 things  What dimensional analysis means and how to use it.   The five factors used in dimensional analysis.  The standard units for these factors.  The physicist G.I Taylor, tha...

1)  Chemical changes through chemistry can be seen in our daily lives. (For example, a piece of bread turning to mold, or milk turning souring.) Its very interesting that basic everyday things around us are causing chemical reactions, 2) I found it very impressive that they are more than five types of chemistry including, physical chemistry, organic chemistry, inorganic chemistry, analytical chemistry, and biochemistry. This opens my eyes to how large the world of chemistry is. Organic chemistry- is the study of chemicals containing carbon.  inorganic chemistry- the branch of chemistry that deals with inorganic compounds. Biochemistry- is the study of chemical processes within and relating to living organisms.   physical chemistry- the branch of chemistry concerned with the application of the techniques and theories of physics to the study of chemical systems. analytical chemistry- studies and uses instruments and methods used to separate, identify, and quan...