MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Earn 100
Hydrogen reacts with oxygen. Draw the equation for the reaction, with lines to show the bonds.
Important Questions on Energy Changes, and Reversible Reactions
HARD
Upper Secondary: IGCSE
IMPORTANT
Now see if you can calculate the energy change for the reaction between hydrogen and oxygen, given the bond energy
MEDIUM
Upper Secondary: IGCSE
IMPORTANT
A sketch an energy level diagram that you think show a good fuel.
MEDIUM
Upper Secondary: IGCSE
IMPORTANT
A sketch of an energy level diagram that you think shows a very poor fuel.
MEDIUM
Upper Secondary: IGCSE
IMPORTANT
What else do you need to think about, to decide whether a substance would make good fuel?
MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Look at the table above. From all the information given, which of the three fuels do you think is best. Explain.
MEDIUM
Upper Secondary: IGCSE
IMPORTANT
The fuel Butane burns to give the same products as methane. Write a balanced equation for its combustion.
MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Can you get electricity from a non-redox reaction? Explain.
MEDIUM
Upper Secondary: IGCSE
IMPORTANT
In a simple cell, which metal gives up electrons to produce the current: the more reactive or less reactive?
