Assessment (Post-Test)
Drectior Choose the letter of the best answer. Write the letter only
1.Which of th following particles is NOT found in the nucleus?
A Proton
C. Electron
B. Neutron
D. Quarks
2.Which of th following statements is NOT correct?
A.the totel mass of the protons and neutrons in an atom accounts for most mass of the atom
B.neutrons have a charge equal to that of electrons.
C. The electron is the first subatomic pa ticle discovered
D. Electron are negatively charge.
3.Chromium has a mass number 52 and atomic number of 24. Solve for number of protons?
A.24.
C. 52
B. 28
D. 76
4.What particle (s) accounts for most of the mass of an atom?
A. Proton
C. Neutrons & Protons
B.Electron
and Protons
D. Neutrons
5. How do you put electric charge to an object? By..
A. hanging
C. cutting
B. biting
D. rubbing
6.In a Bismut, atom, the atomic mass 209, Atomic number is 83 how many numbers of neutrons does it contain?
A. 209
C. 83
B. 126
D. 292
7.In a 1 atom of zinc, 30Zn), the respective numbers of protons, neutrors, and electrons are
A.30,35,30
C.30,6535
B.30,65,35
D. 65,35,30
8.The number of prctons in an atom 31 Ga??
A.31
C.65
B. 34
D. 96
9. In a Fluorine atom 9 F19 what is the number neutrons"
A. 29
C.10
B. 38
D.9
10. If ar atom has 24 protons and 24 electrons, what is the atomic number of this element?
A. Zero
C.48
B.24
D.42​