Which of these outcomes is conclusive evidence that mixing sugar in water is a 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 must occur for air masses to form fronts

Structure of the atoms: discovery of the nucleus in 1909i need answering all of these questions