Is mixing vanilla and eggs into a butter and sugar mixture a chemical or physical change

Freezing 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.

What are the two major rules associated with polarity

What is the percent by mass of magnesium sulfate in mgso4.7h2o