Atoms and Molecules - Class 9 Science CBSE ICSE
Improve your understanding of Atoms and Molecules by practicing the below questions from class 9 Science.
Mercuric oxide mercury + oxygen
100g 92.6 g + ______
What will be the amount of oxygen obtained in this reaction?
Among the following examples, the monovalent Anion is
The atomic number of an element X is 13.The number of electrons in its ion X3+ will be
Which postulate of Dalton's atomic theory is the result of the law of conservation of mass?
Among the following examples, a polyatomic ion is
Clusters of atoms that act as an ion are called __________ ions.
The elements present in baking powder are
When 3.0 gm of carbon is burnt in 8.0 gm oxygen, 11.0 gm of carbon dioxide is produced. The mass of carbon dioxide formed when 3.0 gm of carbon is burnt in 50.00 gm of oxygen is
5 grams of Calcium is same as (Atomic mass of Calcium is 40)
Calculate the number of aluminium ions present in 0.51 gm of aluminium oxide.
Topics in Class 9 Science: