Pure substances are (1)____________ in appearance. During boiling, the
temperature of a (2)__________changes at the start then it becomes (3)_________.
During melting, a substance melts (4)___________ within a short time.
To determine a (5)_________ sample if it is a pure substance , you should test
it using its boiling point; while if it is a (6)________ sample, its melting point is the
best way to test.
In Enrichment A, the liquid A is (7)_________ since it has a fixed boiling point
while the water with salt is a mixture because it has a varying melting point.
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Answer:
BAHUT ZYADA NAHI HAI YEH SAB?
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