1.

What are the two things in this universe that don\'t participate in chemistry?

Answer» They are results of NUCLEAR reactions, not chemical ones.
And heat from the sun.
Then, it might be sunlight.
Time is a fundamental (physical) quantity which we study in chemistry. Space also contains chemistry because it contains complex chemical compounds and some gaseous molecules (like H2O) and hydrogen and dust particles.
Space and time, I believe.


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