Ions cations and anions

Ions cations and anions

• 1.
  Ions Cationsand Anions
• 2.
  Ions An atom that carries an electrical charge is called an ion If the atom loses electrons, the atom becomes positively charged (because the number of positively charged protons will be more the number of electrons)
• 3.
  Ions Continued Thenumber of protons does not change in an ion The number of neutrons does not change in an ions So, both the atomic number and the atomic mass remain the same .
• 4.
  Think about it An atom has lost an electron. Now it has one more proton than electron. One more proton means one more positive charge. This makes the total charge of the atom POSITIVE
• 5.
  Think about itAn atom has gained an electron. Now it has one less proton than electron. One less proton means one less positive charge. This makes the total charge of the atom NEGATIVE.
• 6.
  Cations and anionsRemember that atoms are electrically neutral, if an atom gains or loses electrons then it becomes charged
• 7.
  Cation Is anatom that loses electrons and becomes positively charged
• 8.
  Anion Is anatom that gains electrons and becomes negatively charged
• 9.
  Ionic Bonding AnIonic Bond is a chemical bond resulting from the TRANSFER of electrons from one bonding atom to another
• 10.
  Covalent Bonding Acovalent bond is a chemical bond resulting from SHARING of electrons between 2 bonding atoms .
• 11.
  Sodium chloride Compound Example of Ionic Bonding
• 12.
  Example of CovalentBonding Two atoms share one or more pairs of outer-shell electrons. Oxygen Molecule (O 2 )