Atomic structure and the periodic table 0.0 / 5 ? ChemistryThe Periodic TableGCSEWJEC Created by: MaddiejamesxCreated on: 09-04-18 23:18 What is an isotope? The number of neutrons in an element is not fixed meaning some atoms of an element have different mass numbers 1 of 11 What are isotopes that have more neutrons than protons more likely to be? Unstable, radioactive and likely to decay 2 of 11 What are all the elements of group 1? Alkali metals 3 of 11 What does it mean to be an alkali metal? When they react with water they cause alkaline solutions 4 of 11 What happens to alkali metals as you go down the group? They get more reactive 5 of 11 What do group 1 form when they react with oxygen? Oxides 6 of 11 What do group 1 form when they react with water? Hydroxides and hydrogen gas 7 of 11 What do group 1 form when they react with chlorine and bromine? Chlorides and bromides 8 of 11 What colour flame does lithium have when burnt with oxygen? Crimson red 9 of 11 What colour flame does sodium have when burnt with oxygen? Orange-Yellow 10 of 11 What colour doe potassium have when burnt with oxygen? Lilac 11 of 11
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