I. MULTIPLE CHOICE, Directions: Read and analyze the sentences carefully. Choose and write the letter of the correct answer in your answer sheet., ___1. What is atomic mass of an element with 40 protons, 40 electrons and 46 neutrons?, a. 6, b. 4, c. 3, d. 7, ___2. Based on this illustration, what is the atomic number of this atomic?, a. 1, b. 4, c. 3, d. 7, ___3. The atomic mass is equal to____________, a. The number of neutrons only, b. The total number of protons and neutrons, c. The number of protons only, d. The total number of protons, neutrons and electrons, ___4. The number in the upper corner of an element tile ( 7 for nitrogen) is called_________, a. The mass number, b. The electron number, c. The proton number, d. The atomic number, ___5. For an atom to be electrically neutral, it must contain the same number of________, a. Neutrons and electrons, b. Protons and neutrons, c. Protons and electrons, d. Neutron and atomic, ___6. In the Bohr model of an atom, what is the maximum number of electrons in the first shell?, a. 1, b. 6, c. 2, d. 8, ___7. How many protons does this element Calcium (Ca) has?, a. 40, b. 21, c. 20, d. 41, ___8. If an atom has 24 protons and 24 electrons, what is the atomic number of this element?, a. 0, b. 42, c. 24, d. 48, ___9. What gives an atom a mass?, a. Protons and electrons in the nucleus, b. Electrons in the clouds, c. Protons and neutrons in the nucleus, d. Electrons and neutrons in the nucleus, ___10. How many neutrons does Sodium (Na) have?, a. 11, b. 12, c. 22, d. 23