Classify these changes into physical and chemical changes- -5 MARKS-S-No Changes 1 Melting of Ice 2 Dissolving sugar in water 3 Burning rubber 4 Burning camphor 5 Melting of wax

Classifications: 1 Mark each [ S.No amp;Changes amp;Type of Change; 1 ...

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Standard VI

Chemistry

Solids

Classify thes...

Question

Classify these changes into physical and chemical changes. [5 MARKS]

$\begin{matrix} S . N o & C h a n g e s 1 & M e l t i n g o f I c e 2 & D i s s o l v i n g s u g a r i n w a t e r 3 & B u r n i n g r u b b e r 4 & B u r n i n g c a m p h o r 5 & M e l t i n g o f w a x \end{matrix}$

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Solution

Classifications: 1 Mark each

$\begin{matrix} S . N o & C h a n g e s & T y p e o f C h a n g e 1 & M e l t i n g o f I c e & P h y s i c a l 2 & D i s s o l v i n g s u g a r i n w a t e r & P h y s i c a l 3 & B u r n i n g r u b b e r & C h e m i c a l 4 & B u r n i n g c a m p h o r & C h e m i c a l 5 & M e l t i n g o f w a x & P h y s i c a l \end{matrix}$

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Classify these changes into reversible and irreversible. [5 MARKS]

\begin{matrix} S . N o & C h a n g e s 1 & D i s s o l v i n g s a l t i n w a t e r 2 & M e l t i n g i c e c u b e s 3 & R e l e a s e o f s t e a m f r o m p r e s s u r e c o o k e r 4 & R i p e n i n g o f f r u i t s 5 & F r e e z i n g o r a n g e j u i c e b y c o o l i n g \end{matrix}

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Some changes are listed in the following table. For each change, write in the blank column whether the change can be reversed or not.

S. No.	Change	Can be reversed (Yes/No)
1.	Sawing of a piece of wood	-
2.	Melting of ice candy	-
3.	Dissolving sugar in water	-
4.	Cooking food	-
5.	Ripening of a mango	-
6.	Souring of milk	-

Classify the following examples into physical or chemical change. [1 MARK]

1) Photosynthesis and burning of coal

2) Dissolving sugar in water and melting of wax

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Classify these changes into physical and chemical changes. [5 MARKS] S.NoChanges1Melting of Ice2Dissolving sugar in water3Burning rubber4Burning camphor5Melting of wax

Classifications: 1 Mark each S.NoChangesType of Change1Melting of IcePhysical2Dissolving sugar in waterPhysical3Burning rubberChemical4Burning camphorChemical5Melting of waxPhysical

Classify these changes into physical and chemical changes. [5 MARKS]

$\begin{matrix} S . N o & C h a n g e s 1 & M e l t i n g o f I c e 2 & D i s s o l v i n g s u g a r i n w a t e r 3 & B u r n i n g r u b b e r 4 & B u r n i n g c a m p h o r 5 & M e l t i n g o f w a x \end{matrix}$