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Scenario 1: Melting point of two solid samples
B. Both substances are white crystalline powder. They cannot determine
Chef Matt and his assistant observed two solid samples: Solid A and Solid
which is which, they heated the two sampies using an improvised melting!
which is a substance and mixture just by looking at it. So, to distinguish
dish. Both the two samples were heated at the same time and received an
equal amount of heat. After a few minutes, they had observed that Solid A
melts completely within a short period of time; while Solid B has portions that
seem to be not melting.
Guide Questions:
1. Which liquid sample is a substance?
Table 1: Boiling point of two liquid samples
Samples
Temperature
Observation while heating
Liquid A
Liquid B
2. Which solid sample is a substance?
Scenario 1: Melting point of two solid samples
Samples
Appearance
Observation while melting
Solid A
Solid B
During boiling, the temperature of a mixture is different at different times.
During melting, a mixture has portions that seem to be not melting.​

right answer please, I need it​