Question

Which of the following statements is true about the nucleus?

Only the strong nuclear force holds the nucleus together.


The strong nuclear force and the residual strong force hold the nucleus together.


The presence of neutrons, the strong nuclear force, and the residual strong force hold the nucleus together.

Only neutrons hold the nucleus together.

not sure



Which of the following is a nucleon?

neutron
electron
up quark
down quark

B?





Which of the following has a +⅔ charge?


electron

down quark

up quark

hadron


B or D


A change in the number of protons or neutrons occurs in which type of reaction?

chemical reaction

electrochemical reaction

thermochemical reaction

nuclear reaction

D?


Which of the following reactions is a nuclear reaction?

2H2O2 2H2 + O2

92238U 90234Th + 24He2+

2Na + Cl2 2NaCl

CO2 + H2O H2CO3

NOt sure

Answer 1

What kind of a course is this?
What are your information sources? text, notes, internet, other?
I'm asking these questions because I don't understand why these answers don't stand out in your resource material.