Phases of Matter
What are the three main phases of matter?
Solids, Liquids, and Gases
What is density?
The measure of the amount of matter within a given volume.
What is pressure?
The measure of force exerted over a given area
What are the names of the three gas laws?
Boyle's Law, Charles' Law, and Gay-Lussac's Law
What is viscosity?
A measure of an fluids resistance to flow
What is the definition of matter?
Anything with mass and volume.
What is the equation for density?
Density = Mass / Volume
How can you calculate area? What about pressure?
Length x Width, Pressure = Force/Area
What law states that a gas' pressure varies directly with its temperature?
Name four viscous fluids
Honey, syrup, molasses, oil, etc.
What is a phase change? What drives this process?
A phase change is the transformation of one phase of matter into another. It is driven by the addition or removal of energy.
Name three possible units of density
g/cm^3, g/L, kg/m^3, etc.
What are some of the units of pressure?
N/cm^2, PSI (pounds per square inch), Lbs/m^2, etc.
What is the difference between a direct and an inverse relationship?
A direct relationship means as one variable changes, the other changes in the same manner proportionally. Whereas, in an inverse relationship, when one variable changes another variable changes proportionally in the opposite direction.
How could you test the viscosity of a fluid?
The slower a fluid pours or takes the shape of a container, the more viscous it is.
A gas is released into a room, and slowly takes up the entire room. What property of gases does this demonstrate?
Gases expand indefinitely
A Squirtel has a mass of 50 kg. When it jumps into a kiddie pool with a volume of 30 L, the water is displaced to 40 L. What is Squirtel's density?
5 kg/L
A monkey squishes a banana in its hand with 12 N of force. If the monkey's hand has an area of 6 cm^2, what is the pressure?
2 N/ cm^2
The pressure at sea level is 1 atm. A beach ball has a volume of 400 mL at sea level. When brought on hike the pressure changed to .5 atm. What is the new volume? Name the law you used to solve.
800 mL (Boyle's Law)
What is a non-newtonian fluid?
A fluid whose viscosity changes depending on how much force is exerted upon it
Explain a demonstration we did that proves that gases have volume.
We put a paper ball into a beaker, turned it over, and dunked it into water. The paper did not get wet because the gas took up the space between it and the water.
An Xbox has a length of 10 cm, width of 20 cm, and height of 5 cm. If it has a mass of 3000 grams, what is its density?
3 g/cm^3
A tennis racket has a length of 20 inches, and a width of 10 inches. If the racket hits a surface with a force of 800 Lbs, what would be the pressure?
4 PSI
A gas has a volume of 30 L at 26.85 degrees C. If the volume decreases to 10 L, what would be the new temperature? What law is this?
Explain how you could escape from quicksand based on what you know about non-newtonian fluids
In order to escape from quicksand, you need to move slowly because it would behave more like a liquid than a solid.