atoms

atoms

1. structure

   • nucleus
     • nuetrons
       • are 0 charge
     • protons
       • have 1+ charge
   • on the out side
     • electrons
       • have -1 charge

2. periodic table

   • different groups order about the number of electrons on the outside shell
     • noble gases
     • halogens
     • alkali metals
     • alkaline earth metals
     • transition metals
     • group 3
     • group 4
     • group 5
     • group 6
     • hydrogen

3. chemical sybol

4. chemical name

5. isotopes

   • atoms of the same element that have different numbers of neutrons are called isotopes

6. elements

   • is a pure substance which cannot be split by chemical means into another substance
   • compounds
     • Mixture - A physical blend of two or more substances that are NOT chemically combined. Compound - A substance that contains two or more elements CHEMICALLY combined in a fixed proportion.
   • mixtures
     • Compound is chemically combined, mixture is not chemically combined

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