Advertisements
Advertisements
प्रश्न
State why addition of sodium chloride to water is considered a physical change, while addition of dilute sulphuric acid to zinc is considered a chemical change.
Advertisements
उत्तर
Addition of sodium chloride to water is considered a physical change because it does not form any new substance. but when the addition of dilute sulphuric acid is added to zinc. They forms zinc-sulphate hence it is considered as a chemical change.
APPEARS IN
संबंधित प्रश्न
Classify the following as chemical or physical change:
Boiling of water to form steam.
State the various conditions that favour the process of evaporation.
Write true or false
Rusting of iron is a chemical change.
True or false
Change of seasons is a non-periodic change.
Fill in the blank
Changes that occur in nature are called ______
What is a physical change ? Give two examples of physical changes.
Select the chemical changes from the following list of changes
Respiration in mammals.
Select the correct answer from the choice given below to complete the sentence
The dissolution of lead nitrate in water is deemed as a _________ change.
Give the reason why the following is considered as chemical changes.
A bright light is seen evolved when a strip of magnesium is heated.
What type of change is colouring of a paper?
