Tests for gases
Hydrogen, oxygen, carbon dioxide, ammonia and chlorine can be identified using different tests.
Hydrogen. A lighted wooden splint makes a popping sound in a test tube of hydrogen.
Oxygen. A glowing wooden splint relights in a test tube of oxygen.
All nickel atoms would have the same number of protons or atomic number.
It is c I hope I helped out with this question!.
The most condensed state of matter is solid
