Also Check - CBSE Class 10 Science 2, 3 & Marks Questions for Term 2 Exam 2022 Previous Years’ Questions Based on Class 10 Science Chemical Reactions and Diagrams. When we analysed the previous ...

The molecular/skeletal diagram for the molecule -- oligo-(phenylene-1,2-ethynylenes) -- is shown below it. The two molecules on the right were imaged a few seconds later, after a chemical reaction ...

Reaction pathway diagrams display information about the energy changes during chemical reactions. Chemical energy. Energy changes occur in chemical reactions as bonds are broken and new bonds formed.

The reaction shown by the second diagram is more exothermic. There is a greater difference in energy between the reactants and products. The green arrow is longer.