It's a chemical change because it's changing the object's property.
The twin primes between 1 and 100 are; (3, 5), (5, 7), (11, 13), (17, 19), (29, 31), (41, 43), (59, 61), (71, 73). Hope this helped<3
Explain more so i could answer it!!
Kinetic energy remains conserved in an elastic collision.
