Vocab
State of matter in which the atoms vibrate.
What is a solid?
The state of matter with a definite volume, but a variable shape
What is liquid?
Increasing which variable would decrease the pressure of a contained gas?
What is volume?
A sample of carbon dioxide occupies a volume of 200 mL at 200 torr pressure. What volume will it occupy at 400 torr pressure?
What is 100mL?
If the speed of an object increases, its kinetic energy
increases
The SI unit of pressure
What is Pascal?
Compare/contrast liquid water and ice in terms of shape, volume, and arrangement of atoms.
liquid water - definite volume, indefinite shape, atoms not packed as tightly
ice - definite shape and volume; atoms packed tightly together
If the volume of a contained gas doubled, what would happen to the pressure?
A box has a weight of 120 lbs and the bottom of the box is 4x3in. What is the pressure the box exerts on the floor?
10 in2
What is the phase change from solid to gas? Is this endothermic or exothermic?
What is sublimation? Endothermic
A reaction in which heat energy is absorbed
What is endothermic?
In which state(s) of matter can materials take the shape of their containers?
liquid and gas
If the temperature of a gas triples in Kelvin temperature, what will happen to the volume of the gas, at constant pressure? Which law would this be?
triple, Charles' Law
What is the new temperature when 6.00L at 20 C is compressed to 4.00L.
What is 195K?
Convert 27°C to K
What is 300K?
About 99% of all matter in the universe; exists at extremely high temperatures, such as those found in stars and the sun
What is plasma?
Which of these phase changes does not involve changing a liquid into a gas? vaporization, sublimation, boiling, evaporation
What is sublimation?
What variables are present in 3 gas laws, and what kind of mathematical relationship exists?
Boyle's P & V inversely proportional
Charles V & T directly proportional
Gay-Lusaac P & T directly proportional
If 15L of neon at 25 C is allowed to expand to 45L, what must the new temp be to maintain constant pressure?
What is 894K?
What is the phase change that is opposite of vaporization? What happens with this phase change?
What is condensation? Gas to liquid phase; as temp decreases, gas particles go back to liquid phase
The phase changes that are exothermic.
What are freezing, condensation, and deposition?
Describe the arrangement of atoms and motion of particles in helium gas
The atoms are not closely packed, and constant random motion
A cylinder that contains air at a pressure of 100kPa has a volume of .75L at 30°C. The pressure is increased to 300kPa at 45°C. Calculate the new volume of the gas.
What is .26L
If 10L of oxygen at 0 C and 760mm Hg are heated to 512 C, what will the new volume of gas if the pressure is also increased to 1520 mm Hg
What is 14.4L?
A 175mL sample of neon had its pressure changes from 75kPa to 1.48 atm. What is its' new volume?
What is 87.5mL?