1.bubbling or fizzing is an indicator of

a. property change
b. phase change
c. physical change
d. chemical change

Great amounts of electromagnetic energy from our sun and other bodies in space travel through space. which is a logical conclusion about these electromagnetic waves? their energy must be very their frequency must be very low these waves can travel without a medium they only travel through a vacuum of space

Acontrol during an experiment. might change remains constant does not exist does change

Δu of , in kj/kg, as it isto k, (a)as a of , (b) at , (c) at .