Module 1
Two or more atoms linked together to make a substance w/unique properties.
What is a molecule?
The moisture content of air.
What is humidity?
True of False - we feel atmospheric pressure
What is false
The use of electricity to break a molecule down into smaller units.
The use of electricity to break a molecule down into smaller units.
When water evaporates, it does this to the surface it is touching.
What is cools it?
The number of milliliters in one liter.
What is 1,000 ml?
The percent of oxygen in dry air.
What is 21%
Energy transferred as a consequence of temperature differences
What is heat
The substance type that does not dissolve in water.
What is nonpolar?
Water that has certain dissolved ions in it.
What is hard water?
The quantity of a substance within a certain volume.
What is concentration?
Number of molecules/atoms of a substance in a mixture for every 1 million molecules/atoms in that mixture.
What is parts per million?
The 3 regions called the troposphere, stratosphere and mesosphere are part of this layer of the earths atmosphere
What is the Homosphere?
The reason water is a liquid at room temperature when all other chemically similar substances are gasses at room temperature. This also makes the surface tension of water larger than that of many other substances.
What is hydrogen bonding?
You need to know this in order to use the factor-label method.
What is the conversion relationship between units?
The effect on the concentration of vinegar when we add water to it.
What is lower/decrease the concentration?
Ozone in the ozone layer is considered an essential substance because it blocks this threat.
What are the sun's ultraviolet rays?
The measure of the energy of random motion in a substance's molecules.
What is temperature?
The phenomena that occurs when individual molecules are so strongly attracted to each other that they tend to stay together, even when exposed to tension.
What is cohesion?
When you put a glass of water outside in 100% humidity, this much water evaporates from the glass.
What is none?
A substance made of billions and billions of one type of atom.
What is an element?
The mass of water vapor in the air at a given temperature compared to the maximum the air can hold at that temperature. (A ratio/percentage compared to 100% saturation.)
What is relative humidity?
In the heterosphere (above the homosphere), the region of the atmosphere above an altitude of roughly 460 km.
What is the exosphere? (Can be considered the last layer of "outer space" before interplanetary space.)
The property of the surface of a liquid that allows it to resist an external force, due to the cohesive nature of its molecules.
What is surface tension?
The average weight of a 1" x 1" column of air from sea level to the top of the earth's atmosphere.
What is 14.7 pounds?