Question 20

Which of the following particles cannot be changed without changing the identity of the element?

a
neutron
b
proton
c
neutrino particle
d
electron
Question 21
Atoms of the same element with differing numbers of neutrons are called:

a
elements
b
compounds
c
ions
d
isotopes

1 answer

For Question 20, the correct answer is:

b) proton

Changing the number of protons in an atom changes the identity of the element.

For Question 21, the correct answer is:

d) isotopes

Atoms of the same element that have different numbers of neutrons are called isotopes.