Which illustrates different states of a substance? 1 ice and water vapor
2 sugar and water
3 limestone and crushed limestone
4 oxygen and nitrogen

Which process does not require the presence of a physical substance in order to transfer heat? air in the atmosphere is heated by the ground. this warm air then rises, and cooler air falls. this is an example of what type of process? how is conduction different from radiation?

In what environment would mineral formation caused by high pressures and high temperatures most likely occur?

Elements in group 2 are all called alkaline earth metals. what is most similar about the alkaline earth metals?