1.
a substance that is burned to give upward thrust to a rocket
2.
an explosive charge that projects a bullet from a gun
3.
a compressed inert gas used to dispense the contents of an aerosol container when pressure is applied and released
4.
a gas used for forcing a substance out of a spray can when you push the button on top
5.
a substance used for making something move forwards, for example fuel for sending a rocket into space
1.
a substance that is burned to give upward thrust to a rocket
2.
an explosive charge that projects a bullet from a gun
3.
a compressed inert gas used to dispense the contents of an aerosol container when pressure is applied and released
4.
a gas used for forcing a substance out of a spray can when you push the button on top
5.
a substance used for making something move forwards, for example fuel for sending a rocket into space