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Earn 100

What is freezing point?

Important Questions on Physical Environment-Heat

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Useful substance in preparation of freezing mixture is 
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What is meant by the inter-molecular forces of attraction? How do they vary in solids, liquids and gases?
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Explain the different processes involved in change of state.
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The process by which a solid changes into a liquid:
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Which ice cube will melt faster? Why?
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Ice can be changed into water by
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When ice melts to form water, then a change occurs in its
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Describe what is happening in the picture below. 

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What do you mean by inter-molecular spaces? How do they vary in different states of matter?
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Melting of ice is a _____ change.
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Write one word from the following. Choose from the box.
Melting Evaporation Freezing Condensation

IceWARMINGWater. Given process is _____.

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Give reason of Icebergs float on ocean water.
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State whether the change, which has occurred in coal tar on being heated is reversible or irreversible.
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Which of the following is a physical change?
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What type of changes is melting of wax?
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Which of the following is not a chemical change?
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Describe what is happening in the picture below.

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How can solids change form? 
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List any three processes to show that matter changes from one state to another.