I believe it is A because a physical change is something that can be changed back to where a chemical change can not be such as burning something.
Modern Periodic table organized on the basis of "Increasing Atomic Number"
Hope this helps!
The addition of silver nitrate to the Fe/SCN equilibrium affects the Ag+ ion. Ag+ reacts with the SCN to form a precipitate. It is not a part of the equilibrium reaction, but it changes the concentration and removes SCN ions. This causes equilibrium to favor the reactants and make SCN to reach equilibrium.
Answer:
A
Explanation:
It shines bright just like the sun hopes this helps
Electrons orbit the nucleus
