Study of Gas laws — CHEMISTRY STD 9 — Question

Identify the following substance:
An alkaline gas A which gives dense white fumes with hydrogen chloride.

What do you observe? When
Barium chloride is added to sodium sulphate solution

Name and state the following with reference to the elements of the first three periods of the periodic table.
Valency of elements in Group 14 and 15.

Name a gas which produces positive rays which only consists of protons.

Identify the gases from the observations:
A colourless gas having a suffocating smell. It turns limewater milky and potassium dichromate solution green.

State the term:
A solution where solvent is a liquid other than water.

What do you understand by the following terms?
saturated solution

If an atom contains one electron and one proton, will it carry as a whole is neutral

How is molecular motion related with temperature?