Advertisements
Advertisements
प्रश्न
Fill in the blank.
A change, which alters the composition of a substances, is known as a___________ change.
Advertisements
उत्तर
A change, which alters the composition of a substances,iis known as a chemical change.
APPEARS IN
संबंधित प्रश्न
Fill in the blank
change in which the substance can be brought back to its original state is called a ............... change.
Fill in the blank.
Changes that occur in nature are called ........................
What role does energy play in initiating a chemical change ?
Tick (√) the correct alternative from the choice given for the following statement.
A substance which can not sublime is
True or false
Is the process of digestion a physical change?
Give a reason why
Freezing of water is a reversible change while burning of a candle – an irreversible 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?
Analogy:
Melting of ice: Physical change.
Popping of popcorn: ______.
Water is the universal solvent. Why?
