16/12/2019 Atoms, Compounds and Mixtures (STUDY BY TOPICS JUNIOR CLASS) 0Comments by Gate Academy Welcome to your Atoms, Compounds and Mixtures (STUDY BY TOPICS JUNIOR CLASS) NAME EMAIL PHONE NUMBER 1. The properties of a compound will be the same as the properties of the elements that make up the compoundTrueFalse2. Nitrogen is in group V (5) of the periodic table. How many electrons are there in its outer shell?7142153. Which particles are to be found in the nucleus of an atom?Electrons and neutrons.Protons, neutrons and electrons. ? ? ?Neutrons and protons.Neutrons only.4. The chemical symbol of potassium is MDPK5. Which one of the following represents the compound called carbon dioxide?CH2OCOCO26. The following are examples of heterogeneous mixtures exceptsugar solutionpetroleumsalt solutionair7. Which component of atom is negatively chargedisotronelectronprotonneutron8. Which one of the following is the chemical symbol for nitrogen?NNitKNe9. When a substance is analysed using an electron microscope, it is found to contain only one type of atom.This substance isa compoundneither of the other threea mixturean element10. Water is a compound made up of two different elements. These elements areHydrogen and nitrogenOxygen and iroSodium and chlorineHydrogen and oxygen11. Where two or more substances are mixed together but not chemically combined, this substance is calleda mixturean atoma compounda molecule12. How many protons are there in an atom of sodium which has an atomic number of 11 and a mass number of 23?2311341213. Who founded the atomic theory John DaltonMicheal FaradayRoger WilliamsBlaise Pascal14. The following are products of fractional distillation of crude oil exceptoctanekerosenebitumennaphta15. Which one of the following is the electronic configuration for a group VII (7) element?2,8,72,42,57,216. Where are the electrons located in an atom?Inside the nucleus.Orbiting around the nucleus.Attached to the neutrons.Attached to the protons.17. Matter is the ‘stuff’ that all things are made of, including us.The diagram shows how some types of matter are classified.The diagram is not complete.Elements are often divided into two sub-groupsWhat are these two sub-groups A and B?Metals and non-metalsMetals and liquidsNon-metals and gasesLiquids and gases18. The chemical symbol of gold isAuAlAdAg19. The period in which an element is located gives usthe electronic configuration of that element.the number of electrons in its outer shell.the number of electron shells that the electron has.the number of neutrons in that element.20. An atom of nitrogen has 7 protons and 7 neutrons in its nucleus. What is its electronic structure?5,22,52,72,8,421 out of 20Time is Up! Time's up
