Properties of Water

Properties of Water

1. Water is the most _________ inorganic compound for living organisms because most cellular activity takes place in water.

- 60 % of an adult human is water - 70% of the earth is water

abundant

Properties of Water

2. Water is a _________ bonded compound.

covalently

Properties of Water

3) Water __________ when it ____________ causing ice to be less dense than liquid water, so lakes freeze from the top down.

expandsfreezes

Properties of Water

4) Water can _________ a lot of ________without changing temperature. This is called having a high ____________.

absorbheat

specific heat

Properties of Water

5. Water is a ________ molecule, meaning there is a greater chance of finding shared electrons orbiting around the __________ atom than the __________ atoms.

a) Oxygen has ______ protons in its nucleus and thus has a much _________ attraction for electrons than does hydrogen with only ______ proton in its nucleus.

polar

8

stronger1

oxygenhydrogen

Properties of Water

b) This uneven sharing gives oxygen a slight __________ charge, while hydrogen has a slight _________ charge.

negativepositive

Covalent Bond

Covalent Bond

Properties of Waterc) The positively charged H of one molecule

is attracted to the negatively charged O of another water molecule, forming a _______________. Hydrogen bonds are ______than ionic or covalent bonds.

Hydrogen Bond

hydrogen bondweaker

Properties of Water

d) Some extraordinary hydrogen bonding properties…

Properties of Water

i. ____________ - the attraction between molecules of the same substance.

Cohesion

Properties of Water

ii. _________ - attraction between molecules of different substances

Adhesion

Properties of Water

Capillary Action

Carnations and Capillary Action

Properties of Water

6). Water as a solutiona) Water is the “_______________”,

or a substance in which the solute dissolves.

b) Water’s ___________ gives it the ability to dissolve both ionic compounds and other polar molecules, such as _________ and ___________.

universal solvent

polarity

sugarsalt

Properties of Water

Properties of Water

c) Water will not mix with __________ substances like oil.

nonpolar