Element & Compound

Element & Compound

1. Word Equations

   • Everything thats on one side of the equation goes on the other side

2. Periodic Table

   • Group 1 metals: Lithium, Sodium, Potassium
   • Group 2: Magnesium, Calcium
   • Non-metals: Hydrogen, Sulphur, Oxygen, Carbon
   • Other Key Elements: Zinc, Copper, Iron

3. Symbols

   • Group 1: Lithium=Li , Sodium= Na , Potassium=K
   • Group 2: Magnesium=Mg Calcium=Ca
   • Non-Metals: Hydrogen=H, Sulphur=S , Oxygen=O , Carbon=C
   • Other Elements: Zinc=Zn , Copper=Cu , Iron=Fe

4. Elements and Atoms

   • Proton- a particle which is found in the nucleus in every atom. The particle has a positive electrical charge. The number of protons in an elements nucleus is called the atomic number.
   • Electron- Contains a charge of negative electricity and is found in all atoms acting as the primary carrier of electricity in solids.
   • Atom- is the smallest object that retains the properties of an element they are composed of electrons and a nucleus. The nucleus contains protons and neutrons. All atoms are electrically neutral, because every atom has an equal amount of electrons and protons.
   • Neutron- an uncharged elementary particle with no electricity. Has a mass nearly equal to that of a proton and is present in all known atomic nuclei other than the hydrogen nucleus.