Why does changing the volume of a container change the pressure of the gas in it? Changing the volume reduces the number of molecules so they hit the walls of the container less often.

Changing the volume reduces the force with which the molecules hit the walls of the container.
Changing the volume increases the speed of the molecules so they hit the walls of the container more often.
Changing the volume increases the area that the molecules collide with so the force is spread over a larger area.

Which statement describes the appearance of a temperature-vs.-time graph? a horizontal line shows that the temperature increases at a constant rate over time. a vertical line shows that the temperature decreases at a constant rate over time. horizontal lines where the temperature is constant during phase changes connect upward-sloping lines where the temperature increases. horizontal lines where the temperature increases are connected by upward-sloping lines where the temperature is constant for each phase.

Which is true of transition metals when moving from left to right on the periodic table? the d sublevels are not filled across the period. the cation radii become larger across the period. atomic radii increase slightly and then start to decrease. atomic radii decrease slightly and then start to increase. o

Word equation for k(s)+h2o(l) yield koh(aq) + h2(g)