The reason Catholics do not eat meat on Fridays is in remembrance  of the day of Jesus Christ's sacrifice for all of humanity. It is a  form of penance to honor and worship â¦ God.    Note that many Catholics today believe that the Church allows them  to eat meat on Fridays except during Lent. This is not true.
Some compounds contain both ionic and covalent bonds. These compounds contain polyatomic ions. Many of these compounds contain a metal, a nonmetal and also hydrogen. However, other examples contain a metal joined via an ionic bond to covalently bonded nonmetals. Here are examples of compounds that exhibit both types of chemical bonding. Examples of Ionic Bonds-Ionic Compounds. Examples of Covalent Bonds-Covalent Compounds.
Ionic bonds vs Covalent bonds. - Ionic bonds occur between atoms having very different electronegativities, whereas, covalent bonds occur between atoms with similar or very low electronegativity differences. - Ionic bonds occur between metals and non metals. Covalent bonding most commonly occurs between two nonmetals. - In ionic bonding, a complete transfer of electrons occurs, whereas covalent bonding occurs when two (or more) elements share electrons. - Ionic substances are usually seen as crystals.