Earth Chemistry: Dry Ice and Salt Video Flashcards
Dry ice doesn’t melt, it ___________.
Sublimates
Another name for dry ice is ______ _______, which is made of _ atom of ______ and _ atoms of ______.
Carbon Dioxide 1 Carbon 2 Oxygen
When a substance goes from a solid to a liquid to a gas, it is called a _____ ______.
Phase
Change
When a substance goes directly from a solid to a gas, it is called ___________.
Sublimation
Based upon the experiment with dry ice in a fish tank and blowing bubbles over the tank, we know that dry ice in a gas form is ____ _____ than the air we breathe.
More
Dense
There are over _____ known uses for salt.
14000
Salt ______ the freezing temperature of water.
Lowers
Salt ________ water.
Attracts
Too much salt in our diet can lead to ____ _____ ________.
High
Blood
Pressure
The state of ______ can provide us with enough salt for the next 250,000.
Kansas
The Chinese used salt to _______ people.
Torture
The Germans used the salt mines to _________________________________________.
Hide stolen items that the Nazis stole in WWII
In the U.S., what are TWO advantages of using salt mines for storing valuables?
Salt lowers and stabilizes and humidity levels.
Salt will not burn.
Another name for salt is ______ ________.
Sodium
Chloride
A 110lb person should consume ____/______ a day.
1 tsp
2400 mg
What percent of our body is made of salt?
.15%
We have to eat salt because:
Our body doesn’t produce it.
Why do we need salt to live?
We need salt to live because it controls the way our muscles, cells, and nervous system work. Salt is an electrolyte, helping a lot of things in our body work, like helping the nerve endings in our body to connect
