It is a compound because a compound is two or more different elements chemically combined.
Answer:
The charge of an atom is the number of protons minus the number of electrons.
The reason people describe water as a universal solvent is because it dissolves almost anything.
Answer:
If the temperature of gas is decreased the pressure will also goes to decrease.
Explanation:
The pressure and temperature have direct relation. If the temperature of gas will increase the pressure of gas will also goes to increase.
According to the Gay-Lussas's Law,
The pressure of given amount of gas is directly proportional to the absolute temperature when volume is kept constant.
Mathematical relationship:
P ∝ T
P = kT
P/T = k
and
P₁/T₁ = P₂/T₂
