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The Magic of Water

Tom and Lisa loved science . One day , their teacher , Mr . Brown , gave them a special task in the science lab .

" Today , we will do an with water , " he said . He gave them a filled with ice cubes . " Watch what happens when we add . "

Tom and Lisa placed the on a hot plate . Slowly , the ice began to , turning into water .

" Wow ! " said Lisa . " The ice is disappearing ! "

" It ? s not disappearing , " said Mr . Brown . " It is changing ! "

As they continued the , the water began to . Bubbles rose to the surface , and soon , they saw white coming out .

" Look ! The water is turning into steam ! " Tom said excitedly .

" Yes , " Mr . Brown nodded . " Water can be a , a , or a gas . Now , let's see what happens when we cool it down . "

They carefully removed the from the hot plate and placed it in the . After some time , they checked it . The water had started to , turning back into ice .

" Amazing ! " Lisa said . " The water became again ! "

" That ? s the magic of science , " said Mr . Brown with a smile .

Then , Tom took an ice cube and dropped it into another of water . The ice cube did not sink .

" Why does the ice ? " he asked .

" Good question ! " said Mr . Brown . " Ice is lighter than water , so it stays on top . "

Tom and Lisa laughed . Science was fun ! They couldn't wait for the next experiment .