Chemistry Topic 1

Chemistry Topic 1

1. Atoms and their structure

   • Sub Atomic Particles
     • Protons
       • +1
       • 1
     • Neutrons
       • 0
       • 1
     • Electrons
       • -1
       • Very small 1/1836
   • Everything is made of tiny particles called atoms
   • They have a small central nucleus
     • contains protons and neutrons
   • Surrounded by even smaller subatomic particles called electrons

2. Isotopes

   • Elements can have different numbers of neutrons
     • Their mass numbers will be different
     • These are called isotopes
       • They all have the same chemical properties
       • Some isotopes are radioactive

3. Periodic Table

   • horizontal rows=periods
   • columns=groups
     • elements in a group have similar properties
   • metals are on the left, non-metals are on the right

4. Chemical Equations

   • Subscripts
   • Coefficients

5. Mixtures

6. Atom models

7. Group 1

8. Group 7

9. Group 0

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