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?

Physical changes do not change the chemical make up of a substance. Chemical changes do.

Slicing a tomato only changes its proportion and size (which are physical properties), instead of anything inside the tomato.

Meanwhile, burning toast changes something inside the toast, making it a chemical change, instead of a physical change.

the best answer is d because the strong cohesion is caused by the ability of water molecules to undergo hydrogen bonding.

a is incorrect because when water solidifies, it becomes   ice, which expands and occupies a bigger volume for the same mass of water in its liquid state.

b is incorrect because water has high surface tension. besides bonding to itself it hydrogen bonds to other molecules at the top decreasing possibility for breaking of attractive forces.

c is incorrect because the water molecule has oxygen which is highly electronegative and so pulls the electron pair towards itself creating a dipole moment, making the molecule polar.

e is incorrect because water has strong adhesion, ability to stick to other molecules such as glass because of this molecules having stronger hydrogen bonding than water.

you didnt put any of the following