Answer :

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What accounts for water's properties of adhesion and cohesion? The polar nature of water and the effects of hydrogen bonding

Further explanation

Adhesion is the tendency of dissimilar particles to cling to one another. While the cohesion is the grammatical and lexical linking within a sentence that holds the text together and gives the meaning. Cohesive forces are the intermolecular forces which cause a tendency in liquids to resist separation. The example of intermolecular forces  are hydrogen bonding and Van der Waals forces. The differences between adhesion and cohesion are in adhesion, the molecules of different substances stick together and in cohesion, the molecules stick to each other

Water is a transparent, tasteless, odorless, and nearly colorless chemical substance. There are five main properties of water such as:

  1. The attraction to polar molecules.
  2. High-specific heat.
  3. High heat of vaporization.
  4. The lower density of ice.
  5. High polarity.

What accounts for water's properties of adhesion and cohesion is the polar nature of water and the effects of hydrogen bonding

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Answer details

Grade:       9

Subject:  biology

Chapter:  water's properties

Keywords: water's properties, adhesion, cohesion, water, accounts

The bonding between the hydrogen atom and the polar nature of the water account for adhesion and cohesion characteristics of water.

Further Explanation:

The water molecules have two hydrogen atoms attached to an oxygen atom by a polar covalent bond. Carbon has an electronegativity of 2.55, which is very close to the electronegativity of hydrogen (2.20). Water is a good solvent because it is a polar molecule (polarity of a molecule is the separation of electric charge result to a molecule consisting of an “electric dipole moment” through a positively charged end and negatively charged end). The oxygen atom in the water molecule is more electronegative (tendency to attract electrons, as they are electron deficient.), while hydrogen molecule is electropositive as compared to the oxygen.

Due to this electronegativity difference, the shared pair of electrons is prominently pulled towards the oxygen atom, giving the atom a partially negative charge, and the hydrogen atoms a partially positive charge. The polarity of water is accountable for the “cohesion and adhesion” characteristics of water.

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Answer Details:

Grade: High School

Subject: Biology

Chapter: Water

Keywords:

Water, electronegative, oxygen, atom, negative charge, carbon, electron, tendency, hydrogen, positive charge, polar covalent bond.

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