Properties of Water
What word describes when a water sticks to another substance?
Adhesion
What word describes when water is attracted to other substances?
Adhesion
Water is the only substance on Earth that naturally exists in _______________.
All three states
Why does ice float?
As water freezes, it expands and its density decreases.
How are adhesion and cohesion similar?
Both are about sticking to something.
Water can move UP paper, against gravity, due to ______________.
Capillary Action
Why does water move from the roots to the leaves of plants?
Capillary action pulls the water molecules up
The attraction that causes water and other liquids to form drops on thin films is called ________________. This is also water's ability to be attraction to other water molecules.
Cohesion
The reason the water balloon did NOT pop while held over a flame is water's _________.
High specific heat capacity
Attractions between water molecules are called
Hydrogen Bonds
What two elements make up water?
Hydrogen and Oxygen
Which is NOT a unique property of water?
Water cools very rapidly.
When you mix salad oil and water they immediately separate because:
Water does not dissolve in oil.
If you put a fine mesh screen under a bottle of water the water will not pour out. Why?
The surface tension of the water holds the water molecules together.
Water is polar because...
It has a slight negative charge near its oxygen atom and a slight positive charge near its hydrogen atoms.
Because of specific heat what warms up faster?
Land
What property of water helps to moderate earth's temperature?
Specific heat capacity
A water strider can skate along the top of a pond because:
Surface Tension
Why is water considered a polar molecule?
The oxygen end is slightly negative and the hydrogen end is slightly positive
Ice freezes at the top of a pond and protects the water life underneath. What property of water is KEY in this situation?
ice is less dense than water