How does the movement of molecules inside a solid block of iron change as the iron is heated? (2 points) the molecules move faster. the molecules move slower. the molecules stop moving completely. the molecules move in the same way at all temperatures.

Which property of fossils allow scientists to determine the relative rock ages..

Look at the potential energy diagram for a chemical reaction. which statement correctly describes the energy changes that occur in the forward reaction?

Astone is dropped with no initial velocity from the top of a cliff and hits the ground a time of 3.9 s later. what is the height of the cliff, in units of meters? you may assume that air resistance is negligible. give the answer as a positive number question 15 a figure skater is rotating at a rate of 200 revolutions per minute. what is the angular speed, in units of rad/s? 200 o 20.9 12000 o 3.33