The Chemistry reference article from the Simple Wikipedia on 01-May-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Chemistry

Chemistry [kem'-uhs-tree] is the science about elements and compounds, and how these work together. It is the study of the materials that make up our bodies and the world around us.

As a true science, chemistry began its scientific study during the 1600s. This is when chemists discovered the simple substances that make up all other substances. These simple substances are called elements.

A chemical compound is a substance which is made up of two or more elements.

Things chemistry is about

• Substances
• Particles
• Elements
• Atoms
• Isotopes
• Ion
• Molecules
• Compounds
• Mixtures
• plastics
• polymers

• Changes of substances
• Properties of substances
• Scientific method
• SI base unit

• Chemical formula
  • Empirical formula
  • Molecular formula
  • Ionic formula
• Chemical bond
• Chemical equation
• Chemical reaction

See also:

• The Periodic Table
• List of common elements
• Common chemical apparatus
• Laboratory techniques
• Chemical techniques

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