Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

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.
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.
Didn't know it?
click below
Knew it?
click below
Don't know
Remaining cards (0)
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

Fuels & Heats

Chapter 21

Saturated compound Contain no double or triple bonds
Unsaturated bonds Contain at least 1 double or triple bond
Alkane Contain only single bonds. Only made up with carbon + hydrogen
Homologous Series A series of uniform chemical type, show a graduation in physical properties, have general formula, have a similar method of preparation, each member differs from the previous by CH2 unit
Structural isomers compounds with the same molecular formula but different structural formula
Alkene Contain 1 double bond. Only made up with hydrogen and carbon
Alkyne Conation 1 triple bond. Only made up of Carbon and hydrogen
Aliphatic compound open chains of carbon atoms and closed rings that resemble them in chemical properties
Aromatic Compounds Counds that conatain a benzene ring structure in their molecules
Octane Number A measure of the tendancy of the fuel to resist knocking with 100 being 2,2,4-trimethylpentance and 0 being heptane
Catalytic cracking the breaking down of long chain molecules into shorter chain molecules
Isomerisation Using heat to forse branching on shorter chains
Heat of reaction the heat change when the moles of the reactants indicated are compleatly reacted
Heat of Combustion the heat change when one mole of the substance is compleatly burned in excess oxygen
Kilogram Calorific Value the heat energy produced when 1kg of fuel is compleatly burned in oxygen
Bond Energy The energy required to break one mole of covelant bonds and to separate the neutral atoms compleatly from each other
Heat of neautralisation the heat change when one mole of H+ ions react with one mole OH- ions
Heat of formation The heat that takes place when one mole of a compound in its standard state is formed from its elements in their stard state
Hess's Law When chemical reaction happens in a number of defferent stages the sum of the heat changes in the separate stages is equal to the heat change if the reaction is carried out in one stage
Law of conservation of energy Energy cannot be created or destroyed but can only be converted from one energy into another
Created by: MarkA0845



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:
restart all cards