Gas theory

What is essential for a combustion reaction to begin?

• Carbon dioxide
• Fuel 
• Fuel, oxygen and heat
• Water and oxygen

Complete combustion is when there is plenty of oxygen to react with. 

• True
• False

Incomplete combustion is when there is a limited amount of oxygen.

• True
• False

What is carbon monoxide?

• A toxic gas
• A large solid

The word equation for combustion is: fuel + oxygen --> water + ________ __________

• Carbon dioxide
• Limewater
• Carbon
• Carbon monoxide

The Bernoulli effect causes passing ships to be drawn together when the ships are close and moving in

• The same direction

• Opposite Direction

• Either of these

• None of these

As a balloon high in the atmosphere descends, it undergoes a decrease is

• Weight

• Volume

• Mass

• Density

In which form the colfloric value represent?

• (kJ/kg)
• gram
• kilogram 
• both 1 & 3

The condition which are required for combustion to take place are:

• fuel
• ignition temperature
• oxygen
• all of these

In a battery the cathode eats away the?

• anode
• fluid
• chemical
• none of the above