Which properties change the composition of a substance?

chemical and physical properties

physical properties

chemical properties

neither chemical nor physical properties

Adeuteron, 21h, is the nucleus of a hydrogen isotope and consists of one proton and one neutron. the plasma of deuterons in a nuclear fusion reactor must be heated to about 3.02×108 k . what is the rms speed of the deuterons? express your answer using two significant figures.

The identities of substances are the same before and after which type of change

Which suspect most likely committed the robbery and how do you know