Question

20. Differentiate between Slow and Fast Changes.

Answer 1

Part 1:

Energy changes are always accompanied by a specific chemical or physical change.

• A chemical change is an irreversible and permanent transformation in which the molecular composition is fully transformed and a new product is generated.
• The arrangement of molecules is altered during the physical change, resulting in a change in state. There are no new compounds produced, and the molecular composition remains unchanged. The alterations are reversible and only last a short time.

Part 2:

Slow changes	Fast changes
Slow changes are those that take a long period of time to complete. This time frame might be measured in hours, days, or even months. Some examples of slow changes are: Rusting of iron Germination of seed change of a season growth of a plant	Fast changes are defined as those that are done quickly or in an extremely short amount of time. This time frame might be placed within a minute. Some examples of fast changes are: burning of a paper The lighting of a bulb cutting an apple Burning of a candle