A chemical change occurs when

A chemical change occurs when one chemical substance is morphed into one or another different substances.

Explanation: For example, when iron becomes rust:

The chemical change occurs through the PROCESS of chemical reactions, and the resulting substances have different properties or strategies because their atoms and molecules are placed differently.

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.

i think so it’s will be b yes i believe its