Both slicing a tomato and a chemical change such as burning toast cannot be reversed however why is slicing a tomato still considered only a physical change

Both slicing a tomato and a chemical change such as burning toast cannot be reversed. Slicing a tomato still considered only a physical change because you are only altering the shape of the tomato by slicing. It does not change in color or produce bubbles when slicing.

1.solid

2.carbon dioxide

3.helium

cytokinesis is the splitting of a cell membrane to form 2 identical daughter cells. it's similar to mitosis as both cells have identical copies of dna and cytokinesis is a step in the mitotic cycle.