What are the three characteristics of gas that we measure?
volume, temperature, pressure
100
The x-axis shows the ________ .
independent variable
100
When a solid changes into a liquid, this process is called _________.
melting
100
Describe the motion of the particles in a gas?
– free to move and spread apart, fill all space
200
Liquids have ______ shape and _________ volume.
– no definite shape and definite volume
200
If temperature is held constant and pressure increases, what else happens?
- volume decreases
200
The y-axis shows the ________.
dependent variable
200
When a liquid turns into a gas, that process is called _____
boiling or evaporation
200
Explain what extrapolation is.
– getting info from a graph that is outside your data points.
300
Gas have _________ shape and __________ volume.
– no definite and no definite
300
If volume is held constant and temperature increases, what else happens?
.-pressure increases.
300
Explain what it means if a graph shows that two factors are directly proportional. Give an example.
as one variable increases, the other variable also increases.
300
When a solid melts into a liquid, or a liquid goes into a gas, it needs to have gained enough __________
- thermal energy.
300
As an object heats up, what happens to the particles?
- they speed up.
400
Describe the difference between a crystalline solid and an amorphous solid
crystalline have particles in a regular repeating pattern and a definite melting point, whereas amorphous solids have no regular pattern and distinct melting point
400
What does Boyle’s law say? When graphing, what type of relationship does it have?
if T is constant, as pressure increases, volume decreases. They are inversely proportional
400
Explain what it means if a graph shows that two factors vary inversely. Give an example.
as one variable increases, the other variable decreases.
400
Explain what condensation is.
– when a gas loses energy to become a liquid
400
What is the formula for pressure?
- Pressure = Force/Area
500
Define viscosity and give an example of a high viscosity liquid.
resistance to flow, corn syrup.
500
What does Charles’ law say? When graphing, what type of relationship does it show?
If T increases at constant P, then volume increases. Directly proportional
500
Explain what interpolation is.
- getting info from a graph that is within the data points.
500
Explain what sublimation is
– when a solid turns directly into a gas without becoming a liquid first.
500
If we increase the temperature in a container of gas, what happens to the pressure? Why?
the pressure will increase because the atoms will be moving faster as they gain more energy