given sentences in the box below. constant Boiling point melting liquid
completely different pure substance mixture
solid distilled water Melting point
heterogeneous homogeneous
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.
completely different pure substance mixture
solid distilled water Melting point
heterogeneous homogeneous
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: 1.homogenous
2.distilled water
3. different
4.completely
5.liquid
6.solid
Explanation:
to know if the liquid is a pure substance you should test the boiling point if it has fixed boiling point or the temeperature is not moving then its pure substance
and if its solid you should test its melting point if it completely melts then its pure substance(mixtures doesnt melt in melting point) this is what i know now :) good luck with your modules :) (i edited this cause of an error)
Explanation: