Save
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


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. Your email address is only used to allow you to reset your password. See 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
edit
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

Enthalpy

cava chem 303 s2d40 4.06 Enthalpy

QuestionAnswer
[...] is the total thermal energy content of a system at constant pressure. Enthalpy is the total thermal energy content of a system at constant pressure.
Enthalpy change is measured in terms of change in heat between the [...] and the [...]. Enthalpy change is measured in terms of change in heat between the products and the reactants.
Although you cannot measure the enthalpy (H) of either system directly, you can measure the [...] in enthalpy between the two systems. Although you cannot measure the enthalpy (H) of either system directly, you can measure the change in enthalpy between the two systems.
The change of enthalpy is noted with the symbol [...]. The change of enthalpy is noted with the symbol ΔH.
Exothermic reacitions have a [...] ΔH because the chemicals lose energy. Exothermic reacitions have a negative ΔH because the chemicals lose energy.
Endothermic reactions have a [...] ΔH because the chemicals gain energy. Endothermic reactions have a positive ΔH because the chemicals gain energy.
Changes in [s-], like chemical reactions, involve changes in enthalpy. Changes in state, like chemical reactions, involve changes in enthalpy.
The energy change during a state change is called "[...] heat" The energy change during a state change is called "latent heat"
latent heat of fusion = heat involved in [...] or [...]. latent heat of fusion = heat involved in melting or freezing.
latent heat of vaporization = heat involved in [...] or [...]. latent heat of vaporization = heat involved in evaporating or condensing.
Created by: mr.shapard
Popular Chemistry sets

 

 



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