1. In "nuclear symbol notation" what information is written as a subscript to the lower left of the elemental symbol?

Question

A. Ionic charge
B. Atomic number
C. Oxidation state
D. Mass number

2. You and a classmate are working on a chemistry presentation about the differences in chemical reactions and nuclear reactions. Which two pieces of information below would you want to be certain to include in your presentation?

A. Nuclear reactions result from exchanges between electrons of different atoms.
B. Chemical reactions result from the exchange or sharing of electrons between atoms, but no new atoms are formed.
C. Chemical reactions involve the nuclei of various atoms fusing to make atoms of different elements.
D. Nuclear reactions stem from changes to the nucleus of atoms and can result in the formation of isotopes of different elements.

Answer 1

B. Chemical reactions result from the exchange or sharing of electrons between atoms, but no new atoms are formed.
D. Nuclear reactions stem from changes to the nucleus of atoms and can result in the formation of isotopes of different elements.