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Reversible and Irreversible Changes
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Reversible and Irreversible Changes
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Reversible and Irreversible Changes
During burning process, energy is released in form of
light energy
heat energy
both a and b
chemical energy
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Reversible and Irreversible Changes
The water which leaves during any evaporation is disappeared in form of
liquid
vapor
solid
gas
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Reversible and Irreversible Changes
Substances which burn in air rapidly and catch fire easily are called
flammable
inflammable
both a and b
not flammable
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Reversible and Irreversible Changes
The melting and vaporization of candle is
reversible
irreversible
both a and b
constant
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Reversible and Irreversible Changes
Heat loss can cause
condensation
freeze into solid
both a and b
evaporation
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Reversible and Irreversible Changes
When a candle is lit solid wax melts into
liquid
vapor
gas
molten
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Reversible and Irreversible Changes
When egg shell is mixed with vinegar a gas is released in atmosphere
oxygen
nitrogen
carbonmono oxide
carbon dioxide
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Reversible and Irreversible Changes
The changes which cannot be returned back to their original products are
reversible
irreversible
same
constant
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Reversible and Irreversible Changes
To initiate a material for burning we need
heat
water
flammable liquid
sunlight
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Reversible and Irreversible Changes
If candle wax is itself burned then its
reversible
irreversible
both a and b
constant
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