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

SHC and SLH

Fourth form revision stack

QuestionAnswer
What is specific heat capacity? The energy needed to change the temperature of 1kg of something by 1 degree without a change of state.
What is specific latent heat? The energy needed for 1 kg of substance to change state without a change in temperature.
Units of specific heat capacity? Joules per kg per degree Celsius.
Units of specific latent heat? Joules per kg
What is another word for melting? Fusion
What does condensation mean? Change from gas (or vapour) to liquid.
What does sublimate mean? Change from solid to gas.
Name two ways liquids change to gases. Boil and evaporate
Why does a boiling liquid have bubbles but an evaporating one does not? Evaporation just from surface, boiling all through liquid.
Name three ways to increase rate of evaporation of some water. Larger area, breeze, higher temperature.
What happens to KE of molecules when temperature rises? The KE increases.
Why do molecules need energy for a liquid to vapourise? Bonds between molecules in the liquid need to be broken.
What does a horizontal section of a cooling curve show? steady temperature, probably change of state
What is Melting Point? Temperature when solid turns to liquid.
What is Freezing Point? Temperature when liquid turns to solid.
Specific Latent Heat of fusion of a metal is 200 kJ per kg. How much energy is given out when 3 kg solidifies at 150 degC? 600kilojoules (600 000 joules)
Specific Heat Capacity of a liquid is 3000 J per kg per deg C. How much heat energy is needed to warm 2 kg by 3 deg? 18 000 joules (18 kJ)
At any temperature, a liquid has a mixture of fast and slow molecules. Which ones are most likely to escape by evaporation? Fast ones
If the average KE of the molecules in a liquid goes down, what happens to the temperature? It falls, liquid cools.
What does KE stand for? Kinetic Energy
Created by: waslancing