Compounds and Atoms 4.5 / 5 based on 2 ratings ? ChemistryAtoms and compoundsGCSEAQA Created by: cranston_thcCreated on: 01-07-15 22:49 What two subatomic particles are in the nucleus of an atom? Protons and Neutrons. 1 of 23 What charge do protons have? Positive. 2 of 23 What charge do neutrons have? No charge, they are neutral. 3 of 23 What charge do electrons have? Negative. 4 of 23 Fluorine has 9 electrons, how many protons does it have? 9 protons aswell. 5 of 23 Fluorine has 9 electrons how many neutrons does it have? 10, because the mass number is 19. (atomic number- mass number =no. of neutrons) 6 of 23 What charge to atoms have? No charge, they are neutral. 7 of 23 What happens when electrons are added to an atom? It becomes a negative ion. 8 of 23 What happens when electrons are removed from an atom? It become a positive ion. 9 of 23 How many types of atom do elements contain? One. 10 of 23 Why do Lithium and Rubidium react in similar ways? Because they both have one electron in their outer shells. They are both in the same group also. 11 of 23 Why are noble gases not reactive? Because they have a complete outer shell (8), which means they are stable. 12 of 23 Why is argon used in filament bulbs? Because argon has a full outer shell and so won't react with the hot tungsten in the filament. 13 of 23 What happens when different elements react with each other? They form chemical bonds known as compounds. 14 of 23 what are ionic compounds made up of? a metal and a non-metal. 15 of 23 In ionic compounds do metals loose or gain electrons? They loose electrons forming positive ions. 16 of 23 In ionic compounds do non-metals loose or gain electrons? They gain electrons forming negative ions. 17 of 23 What are ions? When atoms gain or loose electrons. 18 of 23 When a metalled a non-metal bond ionically do they share or give electrons? They give electrons. 19 of 23 Why are ionic bonds attracted to each other? Because of the negative and positive ions. 20 of 23 What is ionic bonding? When negative and positive ions are attracted to each other. They give electrons away in this process. 21 of 23 What is covalent bonding? A covalent bond is a chemical bond that involves the sharing of electron pairs between atoms. 22 of 23 what is the electronic arrangement of the first 3 shells? 2,8,8 23 of 23
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