Which statement best describes a physical change ? a. changes can occur to certain chemical properties of the substance, but the overall shape of the substance will remain the same. b. changes can occur to certain physical properties of the substance, but the overall shape of the sub stance will remain the same. c. changes can occur to certain physical properties of the substance, but chemical composition of the substance will remain the same. d. changes can occur to certain chemical properties , but chemical composition of the substance will remain the same.

the answer is C.Changes can occur to certain physical properties of the substance, but chemical composition of the

Explanation:

a physical change occurs when the physique of a substances is changes while its composition remain unchanged. for example when the ice melts it is a physical change as the shape of the ice is changing but the properties of both ice and water are same.

sonar - device which is used to find the submit submarines, sankalp ship. sonar waves consists of a transmitter and detector which are installed in the observation centre on board of a ship. the ultrasonic waves are sent into the sea at high frequency about 1000 khz in all direction.

measuring things 1 litre of water