Question

Which of the following is an indication of a chemical reaction?

Answer 1

Mechanical force induces chemical reaction

Self-strengthening plastics and artificial bone made from synthetic polymer may be one step closer to reality thanks to a breakthrough in chemistry that allows mechanical force to induce chemical reactions.

Typically, light, heat, electricity and chemical catalysts are used to activate such reactions. Mechanical force has rarely been used in the past, and primarily to pull apart long chains of polymers.