GENERAL SCIENCE CLASS 7 Chapter 6: Structure of an Atom Class 7 MCQS by Shoaib GabolFebruary 2, 2024March 20, 2024 Structure of an Atom ( PART 5 ) 1. The atomic mass of an element is calculated by: Dividing the mass number by the atomic number Counting the number of electron shells Subtracting the number of protons from the number of neutrons Adding the number of protons and neutrons 2. Who proposed that atoms are mostly empty space with a small, dense nucleus? J.J. Thomson James Chadwick Niels Bohr Ernest Rutherford 3. The mass of an electron is approximately equal to: The mass of a proton 1/1840th of a proton 1/1840th of a neutron The mass of a neutron 4. The atomic number of an element is equal to the number of: Electrons Neutrons Isotopes Protons 5. An atom that has gained electrons has a: Positive charge Negative charge Neutral charge Variable charge 6. Who proposed the nuclear model of the atom? Ernest Rutherford James Chadwick J.J. Thomson Niels Bohr 7. The nucleus of an atom contains: Electrons and protons Protons and neutrons Electrons and neutrons Protons, neutrons, and electrons 8. The number of protons in an atom is also known as its: Atomic number Mass number Electron number Neutron number 9. The electrons in the inner shells of an atom are called: Valence electrons Core electrons Orbital electrons Neutron electrons 10. The atomic number of an element is represented by the letter: M Z N A Loading … Pages: 1 2 3 4 5
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