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.

Remove ads
Don't know
Know
remaining cards
Save
0:01
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

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




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