Tyrone mixes some chemicals together. He notices that the mixture gives off heat and is hot to touch. What type of reaction is this? A. Physical
B. Chemical
C. Polar Bear
D. Solution

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