Chapter 8: Reactivity Trends 0.0 / 5 ? ChemistryReactivity TrendsASOCR Created by: TheresaElizabethCreated on: 03-02-19 15:58 Reducing Agent: definition a species that reduces another species by losing electrons 1 of 13 Gruop 2 reaction with oxygen all react to form a metal oxide (MO), made of M2+ and 02- 2 of 13 redox of group 2 with oxygen metal is oxidised, oxygen is reduced 3 of 13 group 2 reactions with water form an alkaline hydroxide, M(OH)2 and hydrogen 4 of 13 redox of group 2 reaction with water metal is oxidised, hydrogen is reduced and stays the same 5 of 13 group 2 reaction with dilute acids forms salt and hydrogen gas 6 of 13 redox of group 2 reaction with dilute acids metal is oxidised, hydrogen is reduced 7 of 13 trends in group 2 reactivity increases down the group 8 of 13 trends in reactivity of group 2: explained nuclear attraction decreases down group due to increased atomic radius 9 of 13 group 2 oxides reaction with water form alkaline solutions of metal hydroxides (release OH) until saturated when they form solid ppt 10 of 13 trend in solubility of group 2 hydroxides increases down group 11 of 13 group 2 compounds in agriculture calcium hydroxide is added to fields as lime to increase pH of acidic soils 12 of 13 group 2 compounds in medicine group 2 bases are often used as antiacids for indigestion 13 of 13
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