Fuels

What gas is needed in complete combustion?

What is the test for oxygen? It relights a glowing ______

In an atom, the atomic number is the number of _______

Crude oil is described as a _______ of hydrocarbons

Crude oil is described as a mixture of ____________

What is a hydrocarbon made of?

• Hydrogen

• Oxygen

• Carbon

• Carbonate

Fuels that are being used up faster than they can be made and will eventually run out are described as ___ - _________

What is used to test for carbon dioxide?

What happens to limewater when carbon dioxide is present? It turns from clear to _______

Incomplete combustion can form the toxic gas ______ __________