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
Give one difference between atoms and molecules.
Classify the following as elements or compounds :
Iron, Iron sulphide, Sulphur, Chalk, Washing soda, Sodium, Carbon, Urea
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.
How much water should be mixed with 12 mL of alcohol so as to obtain 12 % alcohol solution ?
What happens when the temperature of a saturated sugar solution is increased ?
Classify the following into true solutions and colloidal solutions:
Ink, Salt solution, Starch solution, Blood, Sugar solution
What will happen if a saturated solution is :
- heated
- cooled
One of the following is a solid foam. This one is :
What type of magnet is fitted on a crane to separate scrap iron objects from a heap of waste materials in factories ?
State whether the following statement are true or false :
Salt and water can be recovered from an aqueous salt solution by the process of evaporation.
A carpenter wants to separate iron nails from saw-dust. Which method of separation should he choose ?
How is scrap iron separated from a heap of waste materials in factories?
Draw a labelled diagram of the fractional distillation apparatus used for separating a mixture of alcohol and water.
The technique which is used to separate particles of a solid suspended in a liquid quickly is called :
You are given a mixture of iodine in alcohol called tincture iodine. Which method will you use to recover both, iodine as well as alcohol, from this mixture ?
Asmita went to buy an earthen pot. There she saw many things kept for sale.
From what substance has the potter made all the things?
A standard sheet of paper is about ______ of atoms thick
The physical state of water at 373 K is ______.
______ is used for industrial refrigeration and transporting frozen food.
Define the term matter.
