Chemistry, 14.07.2020 01:01 sharri44

Water exists as a simple molecule. Describe the bonding present in water and how the electrons are involved in these bonds.

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Answer from: viv1302

The *intramolecular* bonding between the Hydrogen and Oxygen atoms are called Covalent Bonds.

Covalent bonds are strong electrostatic attractions between 2 positively charged nuclei and a shared pair of electrons.

The *intermolecular bonding* of water molecules is called hydrogen bonding as well as instantaneous - induced dipole interaction.

Instantaneous-induced dipoles is where 2 water molecules interact. The results in negative electron clouds repelling each other resulting in a region of positive charge - the molecules are said to have an induced positive charge.

This water molecule with an induced positive charge then attracts electrons from a neighbouring water molecules - resulting in an instantaneous negative dipole.

These dipoles are fleeting/temporary and are the weakest intermolecular bonds.

Hydrogen bonding is a result of the 2 line pair of electrons in Oxygen atom of the water moelcule. These electrons are attracted to extremely electronegative (electronegativity :ability of an atom to attract a bonding pair of electrons) elements such as Oxygen from a neighbouring water molecule resulting in what is known as hydrogen bonding,

Answer from: Quest

answer: c. the experiment shows that the red substance experienced a chemical change.

explanation: chemical change is the change in which chemical composition of the substance changes. physical change is the change in which there is no change in chemical composition.

chemical changes are accompanied by following changes:

a) precipitate formation

b) energy is released or absorbed

c) formation of bubbles

d) change in color

as it is given that the red color has disappeared and there is production of gas, it means the red substance has undergone a chemical change.

Answer from: Quest

c. heat could easily travel through the molecules in the air and escape/enter the flask. removing the air slows down the heat transfer.

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Water exists as a simple molecule. Describe the bonding present in water and how the electrons are i...