Question

1. Which liquid sample is a pure substance?
Table : Boiling point of two liquid samples
Samples Temperature Observation while heating
Liquid A
Liquid B
2. Which solid sample is a pure substance?
Soerano 1: Melting point of no solid samples
Samples Appearance Obecration while melting
Solid
Solid B
During boiling the temperature of a substance changes at the start then it
becomes the same and constant. During melting a substance melts completely/
smoothly within a short time​

Answer 1

Answer:

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During boiling the temperature of a substance changes at the start then it

becomes the same and constant. During melting a substance melts completely/

smoothly within a short time​

Explanation: