Which of the materials above are mixtures

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.

According to the vsepr theory what is the shape of a molecule that has a central atom valence three other items with no lone pairs of electrons

If two identical atoms are bonded, what kind of molecule is formed