Cation and Anion

• What is a positive ion called?

  Cation
• How is a cation produced from a neutral atom?

  When one or more electrons are lost from a neutral atom
• How is a cation named?

  Using the name of the parent atom
• What is a negatively charged ion called?

  Anion
• How is an anion formed from a neutral atom?

  When electrons are gained by a neutral atom
• What charge does an atom have when it gains one extra electron?

  1-
• How many protons and electrons does a chlorine atom have?

  Seventeen protons and seventeen electrons
• What are the key differences between cations and anions?

  • Cations are positive ions formed by losing electrons.
  • Anions are negative ions formed by gaining electrons.
• What is the process of ion formation in atoms?

  1. Cation formation: Loss of electrons from a neutral atom.
  2. Anion formation: Gain of electrons by a neutral atom.
• Electricity - is a steady flow of electrons or electrically charged particles through a substance
• conductor - the electrons themselves are able to flow through the substance, carrying the current
• Ions - the current is moved by molecules
• Ion - any atom or molecule with a net charge, either positive or negative.
• HOW TO PRODUCE AN ION

  • by taking a neutral atom and adding or removing one or more electrons
• Ions are formed when an atom lose or gain electrons.
• Metals - tend to lose electron
• Nonmetal - gain electrons during chemical bonding to attain satbility
• Octet rule

  • it is atom to gain stability
  • has eight valence electrons in their outermost shell