Give the number of atoms in the molecule of the gases among the elements mentioned below Na, Mg, Al, Si, P, S, Cl and Ar

not clear

answer: c. the experiment shows that the red substance experienced a chemical change.

explanation: chemical change is the change in which chemical composition of the substance changes. physical change is the change in which there is no change in chemical composition.

chemical changes are accompanied by following changes:

a) precipitate formation

b) energy is released or absorbed

c) formation of bubbles

d) change in color

as it is given that the red color has disappeared and there is production of gas, it means the red substance has undergone a chemical change.

e

clouds form

solid ice forms on leaves.

water droplets form on grass.

the answer is a and have a great day