Question

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Answer 1

8. (a) K = °C + 273 = 25°C + 273 = 298K

(b) K = °C + 273 = 373°C + 273 = 646K

9.

• All matter is composed of very small particles which can exist independently.
• They have space between them and continuously moving.
• They attract each other.

10. Homogeneous Mixture:

• In this type of mixture, composition is uniform throughout the mixture.
• It cannot be seen through naked eye.

Heterogeneous mixture:

• In this type of mixture, composition is not uniform throughout the mixture.
• It can easily seen through naked eye.