steam and air.
steam+steam engine=pressure
freezer
fire and water
You cant make alchemy classic, its a game! Though you can download it and play it!
in alchemy classic its 2 bacteria but it might be different in the original (assuming your playing alchemy classic)
Steam+water
caoutchouc
lplolol
Metal + Steam = Boiler
Air + Steam
air + steam
Steam+water