What makes a good fuel?

There are lots of fuels to choose from.
Some are non-renewable fossil fuels such as oil, kerosene, petrol or gasoline, diesel or petrodiesel, coal, natural gas, coal seam gas (CGS).
Some are renewable biofuels like biodiesel, bioethanol, biogas.
How can chemistry help us decide which fuel to use?
I'm glad you asked!
AUS-e-TUTE has just added new resources (tutorial, game, test, exam, drill) to help you understand how a fuel is chosen for a purpose.
AUS-e-TUTE Members should log-in to use the new resources.
If you are not an AUS-e-TUTE, you can now access a "free-to-view" Comparing Fuels tutorial at http://www.ausetute.com.au/fuelenergy.html

Mass Number and Number of Neutrons

What is the mass number of an atom?
Why is it called a "mass number"?
How many nucleons are in an atom of an element?
How many neutrons will you find in the nucleus of an atom?

These are all good questions, which is why AUS-e-TUTE has just added new resources to help you understand and answer these questions.
AUS-e-TUTE members should log-in to access the new tutorial, game, test and drill.

Not an AUS-e-TUTE Member?
A "free-to-view" mass number tutorial with worked examples is currently available at
http://www.ausetute.com.au/massnumber.html

If you want to play the games, do the tests, exams and drills and get immediate feedback on your answers, you will need to join AUS-e-TUTE.