Which statement accurately describes what happens when ice melts in terms of energy?
a)the ice releases energy which causes the water molecules to have less kinetic and potential energy, changing their configuration from solid to liquid.
b)the ice releases energy which causes chemical bonds to break, changing the ice to water
c)the ice absorbs energy which causes chemical bonds to break, changing ice to water
d)the ice absorbs energy which causes the water molecules to have more kinetic and potential energy, changing their configuration from a solid to a liquid

Amount of liquid measured in l or lm

What element breaks down into yttrium-90?

Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? a. the balloons both rise. the cold balloon is larger than the warm balloon. b. the balloons rise at the same rate. both balloons are the same size. c. the warm balloon expands and rises. the cold balloon shrinks and sinks. d. the cold balloon expands and rises. the warm balloon shrinks and sinks.