Describe chemical and physical changes
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Chemical change
A new substance is formed.
It is a permanent change.
It is usually irreversible.
A lot of energy in the form of ( heat, light, sound, etc) is absorbed or given out in chemical change.
Eg Burning of paper
Physical change
No new substance is formed.
It is a temporary change.
Some are reversible.
Very little energy in the form of ( heat, light) is absorbed or given out in physical change.
Eg Melting of ice
Hope it helps
Please mark as brainliest
A new substance is formed.
It is a permanent change.
It is usually irreversible.
A lot of energy in the form of ( heat, light, sound, etc) is absorbed or given out in chemical change.
Eg Burning of paper
Physical change
No new substance is formed.
It is a temporary change.
Some are reversible.
Very little energy in the form of ( heat, light) is absorbed or given out in physical change.
Eg Melting of ice
Hope it helps
Please mark as brainliest
PriyaNSKS:
thank u
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