Advertisements
Advertisements
प्रश्न
A change in which matter undergoes a change but the total mass of the substance is unaltered is a ______ change.
पर्याय
physical
chemical
Advertisements
उत्तर
A change in which matter undergoes a change but the total mass of the substance is unaltered is a physical change.
APPEARS IN
संबंधित प्रश्न
Tick the most appropriate answer.
5. Photosynthesis requires
- heat energy.
- wind energy
- sunlight.
- sound energy
Write true or false for the statement.
Burning of paper and formation of curd are reversible changes
Is burning a physical change or a chemical change? Why?
Which of the following are physical changes and which are chemical changes ?
Freezing of water
Which of the following are physical changes ?
- melting of iron metal
- rusting of iron metal
- bending of an iron rod
- drawing a wire of iron metal
Differentiate between a physical change and a chemical change with reference to – Nature of change is temporary and reversible or permanent and irreversible.
State what is meant by the term – interconversion of matter. Is interconversion of matter a physical change or a chemical change.
Compare the energy changes involved during a physical and a chemical change.
When ice melts to form water, change occurs in its
Sublimation of Iodine is a ______.
