Hydrogen-
Hydrogen is the answer because the number of protons is the atomic number. All the elements have different atomic numbers and hydrogen has the least with an atomic number of 1.
The answer is C i’ve got this question and the answer was C , hope this helps.
The correct answer is letter B: A streak test.
Answer:
anhydrous compound
Heating a hydrate leads to an endothermic reaction that produces a residue known as the anhydrous compound. This compound is different in structure, texture and even color in some cases, from its parent hydrate.
