Atoms and Molecules Quiz 7

‘Washing soda’ is the common name of

A neutral metal atom becomes dipositive ion by loosing two”electrons. In the same way a neutral non-metal atom becomes uni-negative ion by gaining one electron. The formula of a compound which is formed by these two ions is

We can test the law of conservation of mass by the reaction between barium chloride and sodium sulphate. While doing the experiment, one of the precautions you have taken is

The apparatus which is not required in the experiment of law of conservation of mass verification of the reaction between barium chloride and sodium sulphate is:

No. of molecules present in 18 grams of $H_2O$

If valency of Mg is ‘+2’ and valency of Sulphate ($SO_4$) is ‘-2’, then the formula of compound formed by these

Homogeneous molecule from the following

How many moles are contained in 180 grams of water ?

What is the valency of silver ?

The Common name of Hydrogen Monoxide is

Valencies of nitrogen and hydrogen are 3 and 1 respectively. The formula of ammonia molecule formed by these two atoms

One of the precautions to be taken in the conduction of experiment on law of conservation of mass is

Ornaments that we wear contains …… metal

The latin name of the element Tungsten is

Molecular formula of Ozone is ……