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Chemical Changes

CBSE IX Chemistry Is Matter Around Us Pure?

is tea a chemical change?

Asked by 7th March 2008 3:04 PM
Answered by Expert

ICSE X Physics Work, Energy and Power

difference between chemical and nuclear change

Asked by likith 4th November 2014 6:30 PM
Answered by Expert

CBSE VII Science Physical and Chemical Changes

using lpg in a gas stove for cooking involve both chemical and physical change
 

Asked by arajeevshashank 12th November 2017 8:29 PM
Answered by Expert

CBSE VII Science Physical and Chemical Changes

preparing crystals of cooper sulphate from copper and sulphuric acid involves both physical and chemical changes
 

Asked by arajeevshashank 12th November 2017 8:32 PM
Answered by Expert

CBSE VII Science Physical and Chemical Changes

why do cut vegetables take up  a brown colouration when exposed to air
 

Asked by arajeevshashank 12th November 2017 8:48 PM
Answered by Expert

CBSE VII Science Physical and Chemical Changes

Preparing crystals of coppersulphate from copper and sulphuric acid involves both physical and chemical changes.why? that is the one asked in my assesment?

Asked by arajeevshashank 16th November 2017 8:13 AM
Answered by Expert

ICSE VII Chemistry Physical and Chemical Changes

what is the chemical name and formulae of charring of sugar

Asked by himansu1069 6th March 2018 3:31 PM
Answered by Expert

ICSE VIII Chemistry Physical and Chemical Changes

why is boiling of eggs a chemical change while the boiling of water is a physical change?

Asked by nathsantanukumar 23rd March 2018 10:41 AM
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ICSE VIII Chemistry Physical and Chemical Changes

define burning . what type of change is it?

Asked by nathsantanukumar 23rd March 2018 10:48 AM
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ICSE VIII Chemistry Physical and Chemical Changes

are the following natural changes ? justify answer a)photosynthesis   b)cooking food  

Asked by nathsantanukumar 23rd March 2018 11:45 AM
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ICSE VIII Chemistry Matter

long answer question explain the main features of a chemical change with example

Asked by nathsantanukumar 23rd March 2018 11:46 AM
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ICSE VIII Chemistry Physical and Chemical Changes

give reason for the following   melting of wax is a physical change but burning of a candle is a chemical change.

Asked by nathsantanukumar 23rd March 2018 12:26 PM
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ICSE VIII Chemistry Physical and Chemical Changes

Is melting of the candle a chemical change?How?

Asked by jaishansra 7th April 2018 9:30 PM
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ICSE VIII Physics Energy

state the energy changes  1)a washing machine 2)a solar cell 3)a battery

Asked by nathsantanukumar 11th April 2018 5:11 PM
Answered by Expert