Identify the following change:
a. Boiling of egg.
[Physical/Chemical]
b. Formation New Moon
[Periodic/Non-Periodic]
c. Evaporation
[Exothermic/Endothermic]
d. Rotting of flower
[Slow/Fast]
e. Lightning
[Periodic/Non-periodic]
Answers
Required Answers:
(a) Boiling of egg
- Chemical change
The boiled egg have little different chemical composition than the raw egg. Like the albumin and the yolk changes their form. Also, the above change is irreversible.
(b) Formation New moon
- Periodic change
Since the moon revolves and rotate at a constant rate, it comes to a new phase after fixed number of days. Like it takes nearly 28-29 days for it to come to the same phase.
(c) Evaporation
- Enodthermic reaction
The matter in liquid state gains energy and breaks it's interparticular force of attraction to change its state to gas. The gas is hence brought due to intake of energy.
(d) Rotting of flower
- Slow change
The flower when plucked from the plant rots or spoils due to oxidation and reaction with atmospheric gases and water vapour which changes the chemical composition of the flower. But it's a slow process, the flower rots after 1-2 days
(e) Lightening
- Non-periodic change
Since thunderstorm is an uncertain atmospheric phenomenon and can arrive whenever their is pressure difference in areas. The lightening is produced when the clouds collide and releases charges into the energy which looks like bright dazzling thunderbolt.
And we are done !!
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(a) Boiling of egg
Chemical change
The boiled egg have little different chemical composition than the raw egg. Like the albumin and the yolk changes their form. Also, the above change is irreversible.
(b) Formation New moon
Periodic change
Since the moon revolves and rotate at a constant rate, it comes to a new phase after fixed number of days. Like it takes nearly 28-29 days for it to come to the same phase.
(c) Evaporation
Enodthermic reaction
The matter in liquid state gains energy and breaks it's interparticular force of attraction to change its state to gas. The gas is hence brought due to intake of energy.
(d) Rotting of flower
Slow change
The flower when plucked from the plant rots or spoils due to oxidation and reaction with atmospheric gases and water vapour which changes the chemical composition of the flower. But it's a slow process, the flower rots after 1-2 days..
(e) Lightening
Non-periodic change
Since thunderstorm is an uncertain atmospheric phenomenon and can arrive whenever their is pressure difference in areas. The lightening is produced when the clouds collide and releases charges into the energy which looks like bright dazzling thunderbolt.