CHEMISTRY 1

• Chemistry is a physical science that deals with the composition, structure, and property of substances and also transformation that these substances undergo
• Physical chemistry is a study of reaction rates, mechanisms, bondings and structure
• Inorganic chemistry is a study of all elements of compounds other than organic compounds
• Analytical chemistry is a study of all qualitative and quantitative analysis of elements and compunds
• Organic chemistry is the study of all chemicals containing carbon
• Matter is anything that occupies spance and have mass
• Plasma is the collection of charged gaseous particles containing nearly equal numbers of positive and negative
• Solid is characterized by resistance to any change in shape, caused by a strong attraction between the

  molecules of which it is composed.
• Liquids have sufficient molecular attraction to resist forces tending to change their volume.
• Gas molecules are widely dispersed and move freely, offers no resistance to change of shape and little

  resistance to change of volume.
• Physical Change is characterized by a change in the phase or state of a substance. Some physical

  properties of the substance are altered, but its chemical composition remains unchanged.
• Chemical change is characterized by a change in composition of its molecules changes. The properties of

  the original substance are lost, and new substances with new properties are produced. An example of a

  chemical change is the production of rust
• Melting is solid to liquid
• Sublimation is solid to gas
• Freezing is liquid to solid
• Evaporation is liquid to gas
• Condensation is gas to liquid
• Deposition is gas to solid