Asap !   which of the following is an example of a ball of clay undergoing a physical change? i. the ball is thrown into the air. ii. the ball is broken into two separate halves. iii. the ball is rolled along the ground. iv. the ball is flattened into a pancake-like shape. a. i and iii only b. i, ii, and iii only c. iv only d. ii and iv only

In a physical change, the substance just changes the state or physical form without affecting the chemical composition of the substance. Some examples of physical change are phase transitions (melting, evaporation), crushing a bottle, the process of dissolution and so on.

Among the given options, the physical form of the ball of clay changes only when the ball is broken into two separate halves and the ball of clay is flattened into a pan-cake like shape. There would be no change in physical form or state when the ball is thrown into the air or rolled along the ground.

So, the correct answer will be: d. II and IV only

because u need two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei to form isotopes.

so since they all have the same shape? i mean maybe because m& m and reeses are both chocolates