Directions: Read the paragraph and identify the correct words that fit in the
given sentences in the box below.
liquid
constant
completely
solid
heterogeneous
Boiling point
different
distilled water
homogeneous
melting
pure substance
Melting point

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.

it's science po pala​