Advertisements
Advertisements
प्रश्न
Describe in your own words, what happens to the particles when salt dissolves in water.
Advertisements
उत्तर
Both salt and water are made up of tiny particles that are invisible under the microscope. When salt dissolves in water, the tiny salt particles occupy the spaces between the water particles and mix with them, thus giving a salty taste to the water. When we mix salt with water there is no increase in the volume of water, as the salt particles take up the inter-molecular spaces of water.
APPEARS IN
संबंधित प्रश्न
What are the conditions for 'something' to be called 'matter'?
What are the characteristics of matter?
Which of the following is a mixture ?
Salt, Air, Water, Alum, Sugar
Name a non-metal which is a good conductor of electricity.
What name is given to those elements which are neither good conductors of electricity like copper nor insulators like sulphur ?
What are the three groups into which all the elements can be divided ? Name two elements belonging to each group.
State one property in which a solution of sugar in water resembles a mixture of sugar and sand, and one property in which it differs from it.
Classify the following into metals, non-metals and metalloids:
Silicon, Mercury, Diamond, Sulphur, Iodine, Germanium, Sodium, Carbon, Magnesium, Copper, Boron, Helium
A solution contains 5.6 mL of alcohol mixed with 75 mL of water. Calculate the concentration of this solution.
State whether the following statement is true or false :
Sponge is an example of solid sol.
Classify the following into solutions, suspensions and colloids :
Soda-water, Milk, Brine, Blood, Ink, Smoke in air, Chalk water mixture, Milk of Magnesia, Shaving cream, Muddy river water.
What is the difference between colloids and suspensions ?
Name the process which can be used to recover salt from an aqueous salt solution.
Fill in the following blanks with suitable words :
A mixture of kerosene and petrol can be separated by .....................
Describe a method to separate a mixture of common salt and sand.
Describe a method to separate a mixture of camphor and sand.
Why wires cannot be drawn from materials such as stone or wood?
Gases do not diffuse very easily.
Gas-solid is ______.
Give an example of liquid in gas.
