Question

1. Fill in the blanks.
1.
All irreversible changes bring a
periment change in a substance.
2.
A change, in which the substance produced can get back to the original form,
is called a
is called a greversible change.
74
3.
Bending of an iron rod is a
change.
4.
Burning of fuel is a
iron is a
chemical change, whereas rusting of
chemical change.
5.
properties are
In chemical change, new substances with
formed.​

Answer 1

mantle is a layer inside a planetary body bounded below by a core and above by a crust. Mantles are made of rock or ices, and are generally the largest and most massive layer of the planetary body. Mantles are characteristic of planetary bodies that have undergone differentiation by density.