Question

if you were to add a proton to a neutral atom what would change? (check all that applies)
element
atomic number
atomic mass
charge
all of the above
if you were to add a neutron to a neutral atom what would change? (check all that applies)
element
atomic number
atomic mass
charge
all of the above

Explanation:

Adding a proton to a neutral atom changes the element (as the element is defined by the number of protons), increases the atomic number (which is the number of protons), increases the atomic mass (as protons have mass), and makes the atom positively - charged. Adding a neutron to a neutral atom only changes the atomic mass as neutrons contribute to mass but not to the element identity, atomic number, or charge.

Answer:

1. E. All of the above
2. C. Atomic Mass