Students performed simple experiments in class to understand the meaning of change and different
Mixing water and milk power to form solution .Crystal structure of sugar is lost when it dissolve in water and this change is fast change .
An object candle can melt to change from solid to liquid but again turn into solid on cooling is a reversible change where as same candle on burning forms smoke and soot particles . The candle vapours escape in surrounding air . This is irreversible change .
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