Describe how you would determine if a physical or chemical change has occurred

What material does not melt at any temperature

Which of these statements explains the difference between nuclear binding energy and the strong nuclear force ?

Which of the following statements about hybrid orbitals is or are true? choose all that apply. choose all that apply. under sp2 hybridization, the large lobes point to the vertices of an equilateral triangle. after an atom undergoes sp hybridization there is one unhybridized p orbital on the atom. the angle between the large lobes of sp3 hybrids is 109.5∘