Term
The 4 properties of a gas that can be measured are 

Definition
volume, pressure, temperature and number of particles (or moles) 


Term
How do you convert a Celsius temperature to a Kelvin temperature? 

Definition
Add 273 to the Celsius temperature. 


Term
What is room temperature in Celsius? 

Definition


Term
Convert 50 °C to Kelvin. 

Definition


Term
These two gases make up most of the troposphere (lowest level of the atmosphere) 

Definition


Term
The 3 levels of the atomsphere are called the ____________, ______________ and ______________. 

Definition
Troposphere, Stratosphere, and Mesosphere 


Term
The levels of the atmosphere are defined by looking at changes in which property of the atmosphere? 

Definition
The temperature. It drops as you rise into the troposphere, then it rises again through the stratosphere, and finally it drops as you enter the mesosphere. 


Term
As altitude increases, air pressure
(rises / drops / stays the same / fluctuates) 

Definition


Term
What causes a temperature increase in the stratosphere? 

Definition


Term
The device that measures air pressure is called a ____________ and it is filled with this liquid. 

Definition
barometer; filled with mercury (Hg). 


Term
As you increase altitude, the air gets "thinner". If air is "thinner" there are (more / fewer) molecules. 

Definition


Term
Which creates a higher pressure on a desk surface  a book resting on its spine or a book lying flat, and why? 

Definition
The book on its spine. Both situations have the same force acting on the desk (the weight of the book) but when the book is one its spine the force is acting over a smaller area, so the pressure is higher.
Pressure = force/area. 


Term
This scientist studied the relationship between gas volumes and temperatures. 

Definition


Term
This scientist studied the relationship between gas volumes and pressures. 

Definition


Term
This scientist studied the relationship between gas pressures and temperatures. 

Definition


Term
The relationship between a gas' volume and its temperature is (direct / inverse). 

Definition


Term
An inverse relationship exists between a gas' pressure and its (temperature / volume). 

Definition


Term

Definition
Standard temperature and pressure.
0 °C and 1 atm
This doesn't mean "normal" temperature and pressure.
It just is a temperature and pressure that scientists use to report gas volumes at. 


Term
The equation for GayLussac's law is 

Definition
P_{1}/T_{1} = P_{2}/T_{2}
Remember that temperature must be in Kelvin!



Term
The equation for Charles' Law is 

Definition
V_{1}/T_{1} = V_{2}/T_{2}
Remember that temperature must be in Kelvin!



Term
The equation for Boyle's Law is 

Definition


Term
At STP, the volume occupied by one mole of any gas is 

Definition


Term
In the reaction __ N_{2 }+ ___ H_{2} → ___ NH_{3}, how many liters of ammonia are produced from 6 liters of H_{2}? 

Definition


Term
In the reaction __ N_{2 }+ ___ H_{2} → ___ NH_{3}, how many moles of ammonia are produced from 84 grams of N_{2}? 

Definition


Term
A gas occupies a volume of 15 mL at 300 K. If the temperature rises to 500 K, what is the new volume of the gas? 

Definition


Term
A gas at a temperature of 250 K exerts a pressure of 1.5 atm in a rigid box. If the temperature drops to 150 K, what is the new pressure of the gas? 

Definition


Term
If the volume of a gas sample is 2 Liters when the pressure is normal atmospheric pressure, what will the new volume be if the pressure drops to 0.4 atm? 

Definition


Term
In the reaction __ H_{2 }+ ___ O_{2} → ___ H_{2}O, how many liters of water vapor are produced from 4 liters of O_{2}? 

Definition


Term
If all the reactants and products are gases in a chemical reaction, then the coefficients of a balanced equation can be interpreted as moles or ________. 

Definition
Liters (or any volume unit). 


Term
Imagine a gas sample in a rigid, fixedvolume container. If that container is heated, the gas sample will rise in temperature and its density will (increase / decrease / not change). 

Definition
not change! Density is mass/volume. By heating the gas, its pressure will rise, but you are not affecting the mass of the sample nor the volume it occupies, since it is in a rigid (fixedvolume) container. 

