Question

Identify whether each reaction represents a chemical reaction or a nuclear reaction by filling in the blank with the word ‘chemical’ or ‘nuclear’.

Cles001-1.jpg + Hes001-2.jpg es001-3.jpg 2HCl

This represents a
reaction.
es002-1.jpgH + es002-2.jpgH es002-3.jpg es002-4.jpgHe + es002-5.jpgn

This represents a
reaction

Answer 1

1) This represents a chemical reaction.
- (H2 + Cl2 → 2 HCl is a rearrangement of electrons/bonds.)

2) This represents a nuclear reaction.
- (Two hydrogen nuclei fusing to form helium involves changes to nuclei and nuclear energy release.)