Which of the following is an example of a physical change? A. A solid dissolves.
B. A bond breaks.
C. A metal rusts.
D. A log of wood burns.

A. A solid dissolves.

Explanation:

The physical change from the given choices is that a solid dissolves.

The dissolution of a solute in a solvent is a physical change and not a chemical change.

A physical change has the following properties:

atomic number of carbon is 6

electronic configuration of carbon is 1s²2s²2p²

orbital diagram of carbon is as shown here in the image.