Water Facts
What is the chemical structure of water?
H2O
What is the property of water that refers to how water molecules are able to "stick" together?
Cohesion
What is the pH of something Neutral?
7
What is the point of a buffer?
To prevent a sharp, sudden reaction.
Water boils at 100 degrees Celsius, what property of water does this refer to?
High Specific Heat
How much of the human body is made of water?
About 70-75%
What is the special form of cohesion that allows bugs to walk on water?
Surface Tension
Is the pH of 11 more acidic or basic?
Basic
True or False: Buffers are always neutral.
False
What property of water can be seen visibly if you add dye or color to it?
Capillary Action
What is special about hydrogen bonds?
This property of water literally means "water-scared", but is talking about something that doesn't dissolve in water.
Hydrophobic
What is another word for basic?
Alkaline
What is the characteristic of life that buffers are involved with?
Homeostasis/ Regulating internal environment
What is the property of water that allows water to stick to things besides itself?
Adhesion
What does it mean if a molecule is polar?
It has unequal sharing of electrons/unequal charge
Where can capillary action be seen in nature?
Plants moving water up their stems
Increase
If you add a strong acid to a buffered solution, would you expect the pH to change drastically? Why?
No, buffered solutions will result in a slight pH change when an acid or base is added.
Water is a universal solvent, what does that mean?
Many substances can be dissolved in it because of it's partial charge.
How many other water molecules can ONE water molecule make hydrogen bonds with?
4
Name 2 hydrophilic substances.
Sugar and salt!
If a solution has more hydrogen ions than hydroxide ions, is it an acid, base, or neutral? And what would the pH have to be between?
Acid, 0-6
Why are buffers important to living things?
They prevent extreme changes in pH which would damage cell function.
What does it mean if something is Hydrophillic?
It will dissolve in water/ water-loving