chem

• an atom is made up of different particles which are protons neutrons and electrons
• what's an atom ?

  smallest part of a chemical element that can exist
• an atom that has lost or gained an electron is known as an ion
• what's an ion

  an atom that has lost or gained an electron
• what's a proton ?

  a small positively charged particle found in atoms of any element
• what's a neutron?

  a small neutrally charged particle meaning it has no charge
• what's an electron?

  a small negatively charged particle found in any element
• symbol for ammonia is NH3
• symbol for methane is CH4