(a) Conversion of milk into yoghurt: This is a chemical change because it involves a change in the composition of the milk to form yoghurt.

(b) Bursting of a cracker: This is a chemical change as well because new substances (gases, light, sound, heat) are formed due to the reaction in the cracker.

(c) Occurrence of an earthquake: This is a physical change. It is a natural phenomenon that involves the movement of the earth's crust but does not alter the chemical composition of the earth.

(d) Revolution of the earth around the sun: This is a physical change. It is a natural event that involves the movement of the earth in its orbit around the sun, but it does not change the earth's chemical composition.

(e) Stretching of a spring: This is a physical change because the spring's shape changes when it is stretched, but its material composition remains the same.

Question

(a) Conversion of milk into yoghurt: This is a chemical change because it involves a change in the composition of the milk to form yoghurt.

(b) Bursting of a cracker: This is a chemical change as well because new substances (gases, light, sound, heat) are formed due to the reaction in the cracker.

(c) Occurrence of an earthquake: This is a physical change. It is a natural phenomenon that involves the movement of the earth's crust but does not alter the chemical composition of the earth.

(d) Revolution of the earth around the sun: This is a physical change. It is a natural event that involves the movement of the earth in its orbit around the sun, but it does not change the earth's chemical composition.

(e) Stretching of a spring: This is a physical change because the spring's shape changes when it is stretched, but its material composition remains the same.

Knowee AI · Accepted Answer

(a) Conversion of milk into yoghurt: This is a chemical change because it involves a change in the composition of the milk to form yoghurt.

(b) Bursting of a cracker: This is a chemical change as well because new substances (gases, light, sound, heat) are formed due to the reaction in the cracker.

(c) Occurrence of an earthquake: This is a physical change. It is a natural phenomenon that involves the movement of the earth's crust but does not alter the chemical composition of the earth.

(d) Revolution of the earth around the sun: This is a physical change. It is a natural event that involves the movement of the earth in its orbit around the sun, but it does not change the earth's chemical composition.

(e) Stretching of a spring: This is a physical change because the spring's shape changes when it is stretched, but its material composition remains the same.

2. Under which different types can thefollowing changes be classified ?(a) Conversion of milk into yoghurt.(b) Bursting of a cracker.(c) Occurence of an earthquake.(d) Revolution of the earth around thesun.(e) Stretching of a spring.

Question

Solution

Similar Questions

Upgrade your grade with Knowee