CBSE IX Chemistry Is Matter Around Us Pure?
If the breaking of glass is irreversible , then how is it considered as a physical reaction?
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19th March 2008
2:08 PM
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CBSE XI Science Physics Work, Energy and Power
i am studying in 11th std .
i want to do a physics project pls help me out by giving ideas on different topics.
Asked by subashsuparna
16th November 2014
8:57 PM
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CBSE VII Science Physical and Chemical Changes
sublimation is a physical change
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12th November 2017
8:24 PM
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CBSE VII Science
a lump of sodium carbonate being crushed is a physical change
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12th November 2017
8:25 PM
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CBSE VII Science Physical and Chemical Changes
using lpg in a gas stove for cooking involve both chemical and physical change
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12th November 2017
8:29 PM
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CBSE VII Science Physical and Chemical Changes
preparing crystals of cooper sulphate from copper and sulphuric acid involves both physical and chemical changes
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12th November 2017
8:32 PM
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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
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ICSE VIII Chemistry Physical and Chemical Changes
What will happen if an inflated balloon is brought near a lighted bulb ? Why? Is it a physical or chemical change?
Asked by Manisa24soren
22nd March 2018
8:00 PM
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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 condensation. what type of change is it?
Asked by nathsantanukumar
23rd March 2018
10:47 AM
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ICSE VIII Chemistry Physical and Chemical Changes
long answer question 1)explain the characteristic of a physical change with example
Asked by nathsantanukumar
23rd March 2018
10:50 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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CBSE VII Science Physical and Chemical Changes
Is melting of ice a chemical reaction?? If yes then how?
Asked by sharma_manjay
5th April 2018
10:18 AM
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CBSE VII Science Physical and Chemical Changes
Physical change with ice ,camphor and two vessels?
Asked by Pankajbalyan01
20th June 2018
4:54 PM
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ICSE VIII Chemistry Hydrogen
how is the formation of water by combining hydogen and oxygen a chemical change.I think it is a physical change because water can be changed to hydrogen and oxygen by the analysis.
Asked by ajishvpm
23rd June 2018
5:25 PM
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ICSE VIII Chemistry Physical and Chemical Changes
freezing of water to ice and evaporation of water are physical changes
Asked by priyankajawa13
12th July 2018
6:22 PM
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ICSE VIII Chemistry Physical and Chemical Changes
cutting of carrot - is it reversible or irreversible change? please clarify.
Asked by garima.gupta
18th July 2018
9:54 PM
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ICSE VIII Chemistry Physical and Chemical Changes
give me the answer - why cutting of carrot is reversible change?
Asked by garima.gupta
20th July 2018
8:04 PM
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CBSE VI Science Changes Around Us
trimming of nails id reversible or irreversible change
Asked by reenasri.chem
23rd August 2018
5:21 PM
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CBSE VII Science Physical and Chemical Changes
Define physical and chemical changes. Can they be reversed? Explain.
Asked by Shreeya Nemani
21st September 2018
5:00 PM
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CBSE VI Science Changes Around Us
How are the following changes Different from each other? a. Changing of milk b. Hot milk becoming cold milk
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29th December 2018
9:43 PM
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CBSE VI Science Changes Around Us
When a candle is lighted,following observations are made: 1)the candle burns 2)size of the candle reduces 3)wax melts 4)melted eax solidifies Which of the above changes arw reversible?
Asked by Z3hdamalik
3rd January 2019
10:12 PM
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CBSE VII Science Physical and Chemical Changes
I need example of physical changes
Asked by Lishashah53
7th January 2019
3:32 PM
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CBSE VII Science Physical and Chemical Changes
Why should more than one clue be used to determine if a substance has gone through a chemical change?
Asked by Nimmi
10th March 2019
12:13 AM
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CBSE VII Science Physical and Chemical Changes
substance before a chemical change are -----------------------------------------------. After a chemcial change the new substances formed are ------------------------------------
Asked by Nimmi
10th March 2019
12:15 AM
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CBSE VII Science Physical and Chemical Changes
whether the change is physical or chemical, the ------------------------------------------------------------------- eventhough-------------------------------------------------------------------
Asked by Nimmi
10th March 2019
12:38 AM
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ICSE VII Chemistry Physical and Chemical Changes
Pulling of rubber strings a reversible change explain
Asked by aryanmanjula6128
21st May 2019
9:30 PM
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ICSE VIII Chemistry Physical and Chemical Changes
Into how many types can you classify the change -germination of seeds
Asked by arsenterprises75
19th June 2019
8:19 AM
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ICSE VII Chemistry Physical and Chemical Changes
is falling of leaves from a tree of irreversible change?give reason.
Asked by roopalmbd60
30th June 2019
10:52 AM
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CBSE VIII Chemistry
Explain the change of energy Ina physical change
Asked by chogeltamang65
6th August 2019
6:11 AM
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CBSE IX Chemistry Matter in Our Surroundings
what type of change is weathering of rocks ?
Asked by baral73
25th August 2019
6:57 PM
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ICSE VII Chemistry Physical and Chemical Changes
Explain Slow and Fast change
Asked by amitgade248
11th November 2019
6:47 PM
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ICSE VII Chemistry Physical and Chemical Changes
Explain Desirable and Undesirable changes
Asked by amitgade248
11th November 2019
6:50 PM
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CBSE VI Science Changes Around Us
what is physical change?
Asked by dsouzasunil
15th November 2019
1:30 AM
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ICSE VII Chemistry Physical and Chemical Changes
Classify the change of melting of gold ornaments
Asked by akhiramvani
17th February 2020
8:24 AM
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CBSE VII Science Physical and Chemical Changes
physical change and chemical change
Asked by rashmipujari87
28th March 2020
6:13 PM
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CBSE VII Science Physical and Chemical Changes
if keep the biscuits in cooler area it will become soft but if biscuits keep in refrigerator it will not become soft. why?
Asked by sagar.chiranrh
5th April 2020
11:56 AM
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ICSE VII Chemistry Physical and Chemical Changes
why we can receive the physical changes
Asked by vedantpatel7528.7sdatl
29th April 2020
3:58 PM
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ICSE VIII Chemistry Physical and Chemical Changes
Give two examples of Melting Vaporization Condensation Solidification Sublimation with reason
Asked by soumyajagtap11.8spicertl
18th May 2020
8:59 PM
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ICSE VIII Chemistry Physical and Chemical Changes
why melting of candle is both chemical and physical change?
Asked by skarletchristian8290.8sdatl
22nd May 2020
12:08 PM
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CBSE X Chemistry Chemical Reactions and Equations
what is the difference between physical meapns and chemical means.
Asked by dikshamishra6875.6sdatl
30th May 2020
8:27 PM
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CBSE VII Science Physical and Chemical Changes
what is physical and chemical changes
Asked by friends4everp
11th June 2020
2:55 PM
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CBSE VII Science Physical and Chemical Changes
Explain the following with reasons: [3] a. Formation of clouds is a physical change. b. Melting of butter to make ghee is a chemical change.
Asked by parthuspoorthy
6th January 2021
1:18 PM
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CBSE VI Science Changes Around Us
Why is cooking of food an irreversible change ?
Asked by drthilakyshetty
10th January 2021
1:27 PM
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CBSE VI Science Changes Around Us
what are physical changes?
Asked by amitkumar310806
5th February 2021
11:58 AM
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CBSE VII Science Physical and Chemical Changes
What are Physical and Chemical changes?
Asked by parvmanyam
4th June 2021
7:30 PM
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CBSE VII Science Physical and Chemical Changes
phisical changes are this which can never be reverse and didn't make new substance
Asked by kirantiwari6264
10th July 2021
1:33 PM
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CBSE VII Science Physical and Chemical Changes
physical ghange
Asked by salmanakhan1985
14th August 2021
2:40 PM
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ICSE VII Chemistry Physical and Chemical Changes
Physical and chemical change
Asked by ishitaagarwal345
28th March 2023
3:58 PM
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CBSE IX Science Matter in Our Surroundings
please answer my doubt
Asked by azeemaliyarukunju898
10th June 2023
10:13 AM
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