ICSE Class 8: Physical Changes Videos | Physical and Chemical Changes

• Why do we feel cool on standing under a fan while sweating?
• what is the difference between melting point and boiling point
• The working of a thermometer depends on property of change in state on heating (Try Or false  
• what is boiling ? Explain ut on the basis of molecular motion
• formula of carbon dioxide
• why melting of candle is both chemical and physical change?  
• Give two examples of  Melting  Vaporization Condensation  Solidification Sublimation  with reason
• what is liquefaction and solidification?
• Why  solid carbondioxide is called dry ice  
• why is boiling of eggs a chemical change while the boiling of water is a physical change?

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