Question

5
(a) Helen weighed three pieces of rock and soaked them in water.
The next day, she weighed them again.
Her results are shown below.
rock
mass before
soaking in water (g)
26.3
mass after
soaking in water (g)
26.3
granite
marble
20.4
20.4.
sandstone
25.5
27.6
Rocks that have lots of small spaces are described as porous.
What evidence is there in the table that sandstone is porous, but
granite and marble are not porous?
When sandstones was soaked in water
then, sandstones weight only increased.
(b) Helen put the soaked sandstone into a freezer for 24 hours.
Water in the spaces in the sandstone froze and expanded.
(1) What would happen to the sandstone as the water froze and expanded?
(ii) In the winter this process happens in rocks in the countryside,
What is the name of this process?
KS3/07/Sc/Tier 5-7/P1​

Answer 1

Answer:

Explanation:

Because the weight of the sandstone increased