Bohr model

• What is the structure at the center  of an atom

  Nucleua
• Electron- located outside the nucleus and has a negatively charge
• Where was Bohr model based on?

  Ernest Rutherford and Max Planck
• He wan known for his quantum theory?

  Max planck
• Why was the neutron is neutral? 


  To maintain balace of proton and electron
• What is the overall charge of an atom?

  Neutral
• Gold- a metal that has an atomic number of 79 and it used to make jewerlies
• Lead- a metal that has atomic number of 82 and named Pb. It is used for weight like batteries
• Carbon- a non-metal that has a number of 6. found as graphite and diamond. It is used to make ink and rubber
• Oxygen- has a number of 16. It is a free element found as a gas in the atmosphere. Vital for plant and circulation
• Aluminum- has a symbol of Al and has aa number of 14. it is used to make cans, window frame
• Calcium- symbol of CA and has a number of 20. found combined with other element as limestone or gypsum. Used in Hyydroxyapatite
• Chlorine- has a symbol of Cl. Found in the sea and salt mine. Used for disinfectant
• What do you call the charge of an atom located in the center? 


  Proton and neutron