Save
Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.


Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't know
Remaining cards (0)
Know
0:00
share
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Chem121 Final

QuestionAnswer
Heat measured under the conditions of constant pressure Enthalpy
___ calorie of heat is required to raise 1.0 gram of water 1.0 degree C 1.0
1.0 calorie of energy is equal to 4.184 Joules of energy
Enthalpy of an endothermic reaction where a solid becomes a liquid Fusion
Change in Enthalpy = ____ - _____ Hfinal - Hinitial
H is ___ and a ____ ____. extensive, state function
Gases are composed of ___ ___ particles. widely separated
Gases are ___ compressible. easily
The term given for the gaseous states of materials that are normally liquid or solid. Vapor
Gas particles are treated as _______________________________. hard spheres with no internal structure
All energy of gas particles is _____. kinetic
Energy of motion Kinetic energy
There is no ____ energy in gases. potential
Gas particles are in ___ ____ with completely randomized directions of motion. constant motion
Gas particle speeds increase with ____. temperature
Force/area = Pressure
All gas particle collisions are ____. elastic
1 bar = ____ 10^5 Pascals
If a balloon is not expanding or contracting, external pressure and internal pressure are ____. equal
The density of air at sea level 1.00 atm
The inventor of the mercury barometer Torricelli
1.00 atm = ___ Torr 760
1.00 atm = ____ mm H20 10,330
1 Food Calorie = ____ 1000 calories or a kilocalorie
If the change in enthalpy is negative, the reaction is ____. Exothermic
If the change in enthalpy is positive, the reaction is ___. Endothermic
Volatile materials have ____. vapor pressure
Nonvolatile materials have ____. no vapor pressure
Absolute Zero = ____ C -273.15 C
Absolute Zero = ____ F -459.67 F
All gases behaving ideally occupy ___ L at STP. 22.4 L
STP: ___ C and ____ atm pressure 0 C; 1.00 atm
Enthalpy of an endothermic reaction where a liquid becomes a gas Vaporization
Enthalpy of an endothermic reaction where a solid becomes a gas Sublimation
Enthalpy of an exothermic reaction where a liquid becomes a solid Solidification
Enthalpy of an exothermic reaction where a gas becomes a liquid Condensation
Enthalpy of an exothermic reaction where a gas becomes a solid Deposition
Created by: Jade_Jenkins
 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!

"Know" box contains:
Time elapsed:
Retries:
restart all cards