Please help!!! Select the correct answer.

According to the valence bond theory, what kind of bond forms when valence atomic orbitals overlap with an unpaired electron?

A. covalent bond

B. sigma bond

C. pl bond

D. no bond

Non renewable resources like petroleum eventually

24 points and brainliest to anyone who can answer under 10 minutes with best ! the table below shows the role of different substances during photosynthesis. substance role during photosynthesis glucose stores chemical energy water combines with glucose to form carbon dioxide chlorophyll traps sunlight which of the following statements would correct one of the roles listed in the table? glucose combines with carbon to form water. chlorophyll reacts with light to produce carbon dioxide. water combines with carbon dioxide during photosynthesis. chlorophyll stores chemical energy needed for photosynthesis.

Compare and contrast physical changes with chemical changes.