D because these are the biggest particles, and are therefore, the most dense.
Solid Magnesium is considered as active metal so it reacts with strong acids like HCl and H₂SO₄ liberating Hydrogen gas according to the following equations:
Mg(s) + 2 HCl(aq) → MgCl₂(aq) + H₂(g)
Mg(s) + H₂SO₄(aq) → MgSO₄(aq) + H₂(g)
so the amount of solid magnesium decrease by addition of strong acid to it.
The minimum amount of energy that colliding particles must have for them to react.
Chemical because the propane has stored chemical energy which is being released and a by-product of that propane is heat or themal energy.
Answer:
For me
Explanation:
It's Cu because other compound contains negative radicals
