Cerrar
The burning match is inverted
The match is held pointing upwards
The match is shaken
A large object is dropped into a glass
A match is lighter than water
A coin is heavier than water
A plant is kept away from the light
A plant is exposed to the sun light
Photographic paper is exposed to the sun light
Blue litmus paper is placed in acid
Red litmus paper is placed in alkali
Iron is exposed to air and water
Wood is burned
A solution od salt and water is evaporated
