हिंदी
सी.आई.एस.सी.ई.आईसीएसई ICSE Class 7

Give One Difference Between Atoms and Molecules.

Advertisements
Advertisements

प्रश्न

Give one difference between atoms and molecules.

एक पंक्ति में उत्तर
Advertisements

उत्तर

Atoms may or may not have independent existance. Molecules have independent existance.

 
shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 1: Matter and Its Composition - Additional questions

APPEARS IN

एस पी सिंग Concise Chemistry [English] Class 7 ICSE
अध्याय 1 Matter and Its Composition
Additional questions | Q 8

संबंधित प्रश्न

The smallest unit of matter that exists freely in nature is called ...........


Fill in the blank

All matter is made up of tiny particles called ______


Write true or false for each statement. Rewrite the false statement correctly.

Matter cannot exist in different states.


A kind of matter which can sublime is


Classify the following into elements, compounds and mixtures:

  1. Sodium
  2. Soil
  3. Sugar solution
  4. Silver
  5. Calcium carbonate
  6. Tin
  7. Silicon
  8. Coal
  9. Air
  10. Soap
  11. Methane
  12. Carbon dioxide
  13. Blood

Explain why steel is used to make railway lines.


Explain why, osmosis can be considered to be a special kind of diffusion. Classify the following into

(i) osmosis, and (ii) diffusion  :

  1. swelling up of a raisin on keeping in water
  2. spreading of virus on sneezing
  3. earthworm dying on coming in contact with common salt
  4. shrinking of grapes kept in thick sugar syrup
  5. preserving of pickles in salt
  6. spreading of smell of cake being baked in the kitchen
  7. aquatic animals using oxygen dissolved in water during respiration

One of the following substances is neither a good conductor of electricity nor an insulator. This substance is :


9.72 g of potassium chloride dissolves in 30 g of water at 70°C. Calculate the solubility of potassium chloride at that temperature.


What is the effect of temperature on the solubility of solids in liquids ?


Milk of Magnesia is :


Name the process which can be used to purify an impure sample of copper sulphate.


How will you separate a mixture of iron filings and powdered carbon ?


What difference in the properties of common salt and sand would enable you to separate a mixture of these two substances ?


Diffentiate between absorption and adsorption.


Non-metals are usually poor conductors of heat and electricity. They are non-lustrous, non-sonorous, non-malleable and are coloured.

Name a non-metal which exists as a liquid at room temperature.


The movement of particles in liquids is ______.


Define the term matter.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×