(a) Physical change and chemical change
(b) Periodic change and non-periodic
change
(c) Natural change and man-made change
Distinguish between the following. please send both of them by writing there name
Answers
Answer:
Physical changes only change the appearance of a substance, not its chemical composition. Chemical changes cause a substance to change into an entirely substance with a new chemical formula. Chemical changes are also known as chemical reactions
Periodic and non-periodic changes Changes that repeat at regular intervals are called periodic changes. Examples: The occurrence of day and night and the waxing and waning of the moon. Certain changes that do not repeat themselves at regular intervals of time, and such changes are called non-periodic changes.
Answer
Natural changes Man-made changes
1. The changes which are brought about by nature itself and are not under the control of humans are called natural changes. The changes which are brought about by humans are called man-made changes.
2. Examples- changes of season, tides in the sea, aging of plants, etc. Examples- burning of fuels, cutting hair, switching on lights, etc.
Answer:
Explanation:Periodic and non-periodic changes Changes that repeat at regular intervals are called periodic changes. Examples: The occurrence of day and night and the waxing and waning of the moon. Certain changes that do not repeat themselves at regular intervals of time, and such changes are called non-periodic changes.
Answer
Natural changes Man-made changes
1. The changes which are brought about by nature itself and are not under the control of humans are called natural changes. The changes which are brought about by humans are called man-made changes.
2. Examples- changes of season, tides in the sea, aging of plants, etc. Examples- burning of fuels, cutting hair, switching on lights, etc+