Is nail polish a pure substance or a mixture?

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

Analyze how limestone is weathered and identify the features that are formed as a result of this dissolution

Stage in which a typical star has completely stopped fusion