Structure of the Atom Quiz 7A Ms. Dana Abdul Salam

Exercise 1:Choose the best answer.1. The three basic components of an atom are: protons, neutrons, and ions protons, neutrinos, and ions protons, neutrons, and electrons 2. An element is determined by the number of: atoms protons electrons neutrons 3. The nucleus of an atom consists of: electronsneutrons protonselectrons protonsneutrons 4. A single proton has no charge positive charge negative charge 5. The mass number of an element is the sum of the: electronsprotons electronsneutrons protonsneutrons 6. A neutron has: no charge and mass of 1u negative charge and negligible mass positive charge and mass of 1u Exercise 2:Complete the following table. Element Name Atomic Number Mass Number Number of Protons Number of Neutrons Number of Electrons Iron(Fe) 26 56 26 30 26 Potassium(K) 19 39 19 20 19 Neon(Ne) 10 20 10 10 10 Phosphorous(P) 15 31 15 16 15 Exercise 3:1. Label the following atom. nucleus electron cloud electrons protons neutrons 2. Use the above figure to complete the following table. Number of protons 4 Number of electrons 6 Number of neutrons 5 Atomic number 4 Mass number 9 3. Is the above atom neutral? Justify your answer.