Question

14) During an activity, a student
added 10 g iron filings and 10 g
sulphur powder in a bowl. He
brought a magnet over the
bowl and noticed that iron
filings were picked up by the
magnet. He put sulphur and
iron filings back into the bowl
and put it on heat. After some
time he brought the magnet
over it again. This time, the iron
filings were not attracted to the
magnet. Which can be inferred
from the activity?

a) the contents in the bowl before heating can be classified as a mixture because they appear different.

b)the contents in the bowl before heating can be classified as a mixture because they could be separated.

c)the contents in the bowl after heating can be classified as a mixture because they were not affected by magnet.

d)the contents in the bowl after heating can be classified as a mixture because their properties changed after heating.​

Answer 1

Answer:

b) the contents in the bowl before heating could be classified as mixture because it could be separated physically