During what change of state do atoms or molecules become more ordered

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

1) describe the physical layout of the ocean floor ? 2) explain how the dumbo octopus swims differently than other octopus species and why this would be an advantage in the aphonic zone . 3) why are the types of organisms that live at each underwater hot vent so dramatically different ?

What happens in the particles of a gas when the gas is compressed