12. The Universe was colder 13.8 billion years ago.

a. True

b. False

13. The higher the energy of the particles in an object are the higher the temperature that object will be.

a. True

b. False

14. Mass can be converted into energy.

a. True

b. False

15. Niels Bohr's atomic model is basically considered as a primitive Hydrogen atom model.

a. True

b. False

16. John Dalton discovered the electron and suggested the Plum Pudding' Model of atom.

a. True

b. False

17. How is the energy of star produced?

a. By Combustion

b. By Decomposition

c. By Nuclear Fission

d. By Nuclear Fusion

18. He noticed that shooting electrons at elements caused them to release x-rays at unique frequencies.

a. Mendeleev

b. Millikan

c. Moseley

d. Segre

19. It was created by bombardment of Molybdenum by deuterons by Emilio Segre and Carlo Perrier in 1937.

a. Oxygen

b. Technetium

c. Helium

d. Uranium

20. He created the classification of elements based on their atomic weight.

a. Rutherford

b. Dalton

c. Millikan

d. Mendeleev​