Which of these are physical changes in matter chech all that apply
boiling water
a pencil being sharpened
exploding dynamite
freezing water
rotting cheese

What forms when chemical reactions combine pollution with sunlight?

The formation of a solid, also known as a is an indication of a chemical change. precipitate particulate particle powder

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∘