Which type of property of matter can be observed without changing the composition of the substance? a) physical properties b) reversible properties c) chemical properties d) irreversible properties

A physical properties

from the original order (top to bottom) the new order will go

1 (founder)

4 (hawk)

2 (mutate)

3 (next generation)

the correct answer: the index of refraction of the second medium is lower i tried this persons answer and it was wrong this person is lying