Elements, Mixtures and Compounds

Elements, Mixtures and Compounds

1. Meanings

   • Element
     • Pure substance containing one type of atom
   • Mixture
     • Several substances physically mixed together
   • Compound
     • Pure substance containing atoms of more than one element chemically bonded together

2. Metals and Non-Metals

   • See qualities table on the next page

3. Elements, Atoms and Compounds

   • Elements contain 1 type of atom
     • Some exist as diatomic molecules (2 atoms)
       • See page for examples

4. Naming Compounds

   • 2 elements
     • First named element keeps name and seconded name end in IDE
     • Sometimes prefixes are also used
       • Mon, Di ,Tri
   • 3 element 1 oxygen
     • ate takes oxygens place
       • Last one hydrogen - hydroxide
   • Some just change to everyday names
     • Water

5. Examples of mixtures

   • Easily separated
   • Sea Water
     • Salt and water
   • Air
     • Nitrogen, Oxygen, Argon, Carbon Dioxide