Put an aluminum atom, Al (aluminum) and an aluminum ion, Al^3+ in increasing (smallest to greatest) order. (Enter "Al" or "Al^3+" first, then enter a semicolon, then enter one space and then enter "Al" or "Al^3+" second.) 4 points

Al^3+;Al

Explanation:

When a metal ion is formed, the corresponding ion is smaller than the atom from which it was formed.

Oftentimes, the formation of a metal ion leads to the loss of an entire shell. The reduces the ionic radius compared to the atomic radius. Hence the metal ion is always much smaller than the metal atom.

answer: c. the experiment shows that the red substance experienced a chemical change.

explanation: chemical change is the change in which chemical composition of the substance changes. physical change is the change in which there is no change in chemical composition.

chemical changes are accompanied by following changes:

a) precipitate formation

b) energy is released or absorbed

c) formation of bubbles

d) change in color

as it is given that the red color has disappeared and there is production of gas, it means the red substance has undergone a chemical change.

e

idk i’m struggling too