Module 1

• Physical chemistry: 


  is the study of macroscopic properties, atomic properties, and phenomena in chemical systems. A physical chemist may study such things as the rates of chemical reactions, the energy transfers that occur in reactions, or the physical structure of materials at the molecular level.
• Organic chemistry


  the study of chemicals containing carbon
• Inorganic chemistry


  the study of chemicals that, in general, are not primarily based on carbon. Deals with the design and properties of materials involved in energy and information technology.
• Analytical Chemistry


  the study of the composition of matter. It focuses on separating, identifying, and quantifying chemicals in samples of matter.
• Biochemistry


  study of chemical processes that occur in living things. Research may cover anything from basic cellular processes up to understanding disease states so better treatments can be developed.
• Matter


  anything that occupies space and has mass
• Solids 


  A matter that is relatively rigid and has fixed shapes and volumes.
• liquids 


  A matter that has fixed volumes but flow to assume the shape of their containers.
• Gases


  A matter with neither fixed shape nor fixed volumes and expands to completely fill their containers.
• pure substance 


  that has a fixed chemical composition and characteristic properties. substance that is a colorless, odorless
• mixtures substance


  which are combinations of two or more pure substances in variable proportions in which the individual substances retain their identity
• homogeneous


  When all portions of a material are in the same state, have no visible boundaries, and are uniform throughout it is a?
• heterogeneous 


  If the composition and properties of a material are not completely uniform it is?
• Physical properties 


  It is a characteristic that can be measured without changing composition of the sample under study such as mass, color, and volume.
• Chemical properties


  The characteristic ability of a substance to react to form new substances such as flammability and susceptibility to corrosion.
• Extensive physical properties


  The amount of substance and include mass, weight, and volume
• Intensive physical properties


  It does not depend on the amount of substance including color, melting point, boiling point, electrical conductivity, and physical state at a given temperature.
• Development of chemistry begin in?

  5TH century BC began in Alexandra, Egypt and developed in China.
• alchemy


  Chemistry in 5th century called?
• Gold


  Alexandrian alchemists tried to turn stone into?
• Gunpowder


  The development of Chemistry in China produces a useful that is used in war and fireworks.
• Importance of chemistry in criminology

  Examining the body part of the suspect

  Fingerprint check

  Checking the evidence

  Chemical forensics

  Do forensic identification
• Alkanes


  C--C
• Alkenes


  C==C
• C≡≡≡C

  Alkynes