C3: The Periodic Table 0.0 / 5 ? ChemistryThe Periodic TableGCSEAQA Created by: CallumCreated on: 11-04-14 14:52 What did Newlands fail to realise? That there were still undiscovered elements 1 of 23 How did Newlands arrange the elements? In order of their atomic mass 2 of 23 What did Mendeleev do in his periodic table? He left gaps for the discovery of new elements 3 of 23 What would tell you 2 elements would have similar properties? Same number of electrons in outer shell 4 of 23 What is a trend? A pattern in reactivity 5 of 23 Why do alkali metals become more reactive as you go down the group? Because an electron is lost more easily 6 of 23 Why do halogens become less reactive going down the group? Because an electron is gained less easily 7 of 23 Give the name for elements in group 1. The alkali metals 8 of 23 Give the name for elements in group 7. The halogens 9 of 23 Alkali metals have _____ melting and boiling points going down the group. lower 10 of 23 Why are alkali metals stored under oil? Because they react vigourously with oxygen and water. 11 of 23 What is produced when alkali metals react with water? A metal hydroxide + hydrogen 12 of 23 What happens when a metal hydroxide is dissolved in water? An alkaline solution is formed 13 of 23 What do transition metals form? Coloured compounds 14 of 23 Transition metals can be used to speed up reactions. What is the word for this? A catalyst 15 of 23 Transition metals have _______ densities and __________ melting points than Group 1 metals. Higher, higher 16 of 23 Are transition metals more or less reactive than Group 1 metals? Less reactive (don't need to be stored in oil) 17 of 23 Halogens travel round in... twos 18 of 23 The halogens melting and boiling points ______ as you go down the group. Increase 19 of 23 What is produced when halogens react with metals? Ionic salts (e.g. Lithium Chloride) 20 of 23 What is produced when a halogen reacts with other metallic elements? Molecular compounds (e.g. Hydrogen Chloride) 21 of 23 What happens if one atom is more reactive than another? A displacement reaction will occur 22 of 23 True or false. Chlorine will displace both bromine and iodine. True. This is because Chlorine is more reactive than bromine and iodine. 23 of 23
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