My Water Chemistry Book

8/3/2019 My Water Chemistry Book

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a. Domestic use- domestic water use is water used for

indoor and outdoor household purposes.

b. Agricultural use- it takes around 3,000 litres of water,

converted from liquid to vapor, to produce enough

food to satisfy one person's daily dietary need.

c. Industrial use- industries that produce metals, wood,paper, chemicals, gasoline, oils, and most other

products all use water in some part of their production

process.

d. Transportation- water transport is the process of

transport a watercraft, such as a barge, boat, ship orsailboat,

e. Recreational use - primary body contact may consist of

the following recreational activities depending on the

characteristics of your water resource, skiing,

swimming, tubing and windsurfing.



a. Define “Covalent Bond” and “Hydrogen Bond”.

Covalent Bond maybe define as a form of chemical

bonding that is characterized by the sharing of pairs of

electrons between atoms.

Hydrogen Bond maybe define as a weak bond

between two molecules resulting from an electrostatic

attraction between a proton in one molecule and an

electronegative...



a. What is one practical way to determine that solid

water (ice) is less dense than liquid water? All

substances are denser as solids in comparison to

liquids.

Polarities maybe define as an atom with a single

proton in its nucleus.



a. Draw a water, molecule and label the partial

positive and partial negative charges that

polarity causes that water molecule to have.

The water high specific heat it requires a huge

amount of energy to raise the temperature of 1 kg of

water by 1 degree Celsius…

a. Find or draw a picture of a scenario that represents

this concept.



Some things dissolve easier in one kind of substance than

another. Sugar dissolves easily in water; oil does not.

Water has a low solubility when it comes to oil.

a. Define solvent, solute, and solution.

Solvent: a substance that dissolves another to form

solution; Water is a solvent for sugar.

Solute: the substance dissolved in a given solution.



Solution: breach or break in anything, esp. one in

parts of the body normally continuous, as from

fracture or laceration: solution of continuity

Cohesion: attraction between molecules of the same

substance.

A. Find, or draw and label an example of cohesion

Adhesion: an attraction between molecules of

different substances.

a. Find, or draw and label an example of adhesion.



Surface-Tension: property of the surface of a liquid

that allows it to resist an external force.

a. Find, or draw an organism walking on the surface

of water as a reminder of this concept.



a. Hydrophobic compounds do not dissolve easily in

water, and are usually non-polar. Oils and other longhydrocarbons are hydrophobic.

Oil is a hydrophobic substance, and does not dissolve

easily in water.

Having a strong affinity for water; tending to dissolve in,

mix with, or be wetted by water.



Salt is a hydrophilic, it dissolve in water easily.

a. One water molecule contains 10 protons (1

from each hydrogen and 8 from oxygen)8

neutrons (none from hydrogen and 8 from



oxygen)water = H2O 10 electrons (1 from each

hydrogen and 8 from oxygen)

13. Define pH scale.

pH: (from potential of Hydrogen) the logarithm

of the reciprocal of hydrogen-ion concentration

in gram atoms per liter; provides a measure on a

scale from 0 to 14 of the acidity or alkalinity of a

solution (where 7 is neutral and greater than 7 is

more basic and less than 7 is more acidic);

a. Draw, label and color code the pH scale.

a. On your scale, list five (5) acids, five (5)

bases, and 3 neutral substances on and

provide pictures for each.

Battery acid



Hci in stomach acid

Lemon juice

Vinegar



Orange juice

Acid rain

Black Coffee



Autoflower cannabis

Pure water

Sea water



Baking soda

Ammonia Solution



Soapy water

Bleach



Oven cleaner

Drain cleaner



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My Water Chemistry Book