I believe the purpose of all major religious traditions is not to construct big temples on the outside, but to create temples of goodness and compassion inside, in our hearts.
Example Essays Introduction Water is an essential ingredient for the existence of life as we know it. Biochemical processes occur in aqueous environments, many of which use water. Photosynthesis is the most basic and significant chemical reaction on earth, providing the primary nutrients, directly or indirectly, for all living organisms and is the primary source of atmospheric oxygen.
Without water and its unique and unusual properties, life as we know it on earth would not exist.
Water is the only substance naturally present on the earth that exists in three distinct states -solid, liquid, and gas. Many of the unique properties in the take for granted include the three physical phases, transparency, universal solvents, density behavior and temperature, high specific heat, high heat of vaporization, viscosity, surface tension and low compressibility.
To understand why these properties exist in water and why they are essential to life on earth it is important to look at the shape and bonding patterns of the molecule because the uniqueness of water is a direct result of its shape and bonding patterns. The shape of the water molecule In the water molecule the oxygen atom is the central atom.
It has four pairs of valence electrons surrounding it. Two of these pairs are shared which form the shared pairs form covalent bonds with the hydrogen atoms. The remaining two pairs are unshared and have a greater repulsive effect than the shared pairs. The combined repulsive effect of the two unshared electron pairs produces an H-O-H bond angle that is smaller than the H-C-H bond angle Actual measurement of the bond angle in water is If the two hydrogen nuclei were as far apart as possible the angle would be The unique bond angle in water is only Chemical bonding To understand the unusual properties of water as well as what causes them we need to have a basic understanding of the chemical bonding and the structure of the water molecule.
The shape of the water molecule is determined in part by the chemical bonding that occurs. For a brief review of chemical bonding see appendix B.
The water molecule consists of the elements hydrogen and oxygen. The chemical bonds in the water molecule are covalent bonds since the hydrogen atoms combine with the oxygen atoms in shared electron pairs. The oxygen atoms exerts a relatively strong pull on the shared electron pairs which causes the hydrogen atom to become electropositive regions and the oxygen atoms to become an electronegative region.
The water molecule is considered a polar molecule because the positive and negative regions are not evenly distributed around a center point. The water molecule due to its polar nature is electrostatically attracted to other water molecules as well as other ions in solution.
The attraction of the electropositive hydrogen atom to the electronegative oxygen atom of an adjacent water molecule is the bridging phenomenon known as hydrogen bonding and is only about 10 percent the strengths of a covalent bond. This special bond is responsible for most of the unusual properties of water: Let us look more closely at the bonding patterns of water.
Polar Covalent Bond When oxygen and hydrogen atoms are brought together the difference in their electronegativities is not sufficient to yield ions. Instead they must share a pair of electrons between them forming a covalent bond. This results in a concentration of negative charges nearer the oxygen atom and thus further from the positively charges protons that make the nuclei of the hydrogen atoms.
The bond formed is intermediate between a fully ionic bond and a purely covalent bond.Dec 29, · Editor's Note: Tanya Marie (“T.M.”) Luhrmann is a psychological anthropologist and the Watkins University professor in the department of anthropology at Stanford University in Stanford, rutadeltambor.com is the author of "When God Talks Back: Understanding the American Evangelical Relationship with God."By T.M.
Luhrmann, Special to CNN. The history of religion refers to the written record of human religious experiences and ideas. This period of religious history begins with the invention of writing about 5, years ago ( BCE). The prehistory of religion involves the study of religious beliefs that existed prior to the advent of written records.
One can also study comparative religious chronology through a timeline of. News Corp. is a network of leading companies in the world of diversified media, news, and information services. Essay No. Pollution.
The word pollution has been derived from the Latin word pollution, which means to make dirty. Pollution is the process of making the environment land water and air dirty by adding harmful substances to it.
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