Chaper 1 Lesson 2 Flashcards
Salinity
The measure of dissolved salts
How is salinity measured?
It is measured in grams
Where does the salt in the ocean come from?
Inside earth, from land, and atmosphere
How does the salt enter from each of these places?
Inside the earth: volcanoes and hydrothermal vents
From land: freshwater in streams and rivers
Atmosphere: wind and deposited into the ocean
What happens to the salt in the ocean?
- dissolves
* becomes sediment and rocks
Tap water
Freshwater from faucet, which has been treated to kill bacteria and harmful substances
Dry ice
Solid carbon dioxide commonly used to keep foods cold during shipping
Salt water
Water that contains dissolved salts
Ice
Water in the solid state
Distilled water
pure water with all substances removed
Sublimation
The process of changing from solid to a gas
Freezing point
The temperature at which a liquid begins to change into a solid
Melting point
The temperature at which a solid begins to change into a liquid
How is density different as you increase the temperature of water?
It is either in the melting or freezing point
What property of water holds water molecules together?
Hydrogen bonds
Polar covalent bond
A bond in which 2 or more different atoms combine, the electrons are NOT shared equally and shared electron charge or in negative pairs
Difference between polar bond and hydron bond.
Polar bonds are combined by negative ends and hydrogen combines with opposite charges of their hydrogen and oxygen “ends”.
How is salt added to the ocean?
By the atmosphere, under the earth, and by land.
How is salt removed from the ocean?
It can either be dissolved or turns into sediment on the sea floor.
What is osmoregulation?
the maintenance of constant osmotic pressure in the fluids of an organism by the control of water and salt concentrations.
Why is alt added when you make ice cream?
Adding salt lowers the freezing temperature of water, it means that the water won’t freeze as easily
The measure of dissolved salts in water is known as_______
Solution
In a solution the part that does the dissolving is known as the__________
Saturation
In salt water which is the solute?
Salt
