Explain why you would expect to find the element Krypton in its uncombined form, while Lithium and Chlorine are found combined together. a. Identify the valence electrons for each element.

b. Describe the group reactivity for each element.

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.