Alkaline+Earth+Metals

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 * = CATHERINE AND VERONIKA :) =

Year 9 Chemistry - Investingating the properties of families/groups ||  ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   || Strontium and chlorine can form strontium chloride. The symbol of strontium chloride is SrCl2. It is useful as a source of redness in fireworks. This is because it is bright red in a flame. Radium and chlorine can form radium chloride. The symbol of radium chloride is RaCl2. It can be used as a medicine which is for cancer treatment. This is because radium is a kind of radioactive element and it can kill the viruses through human’s skin. Barium hydroxide is one of the principal compounds of barium. The symbol of barium hydroxide is Ba(OH)2. The uses are producing insects killer. The reason it can be used as insects killer is Ba(OH)2 is a kind of material which is poisonous. Beryllium is used in nuclear weapon design and it forms beryllium oxide when combined with oxygen. Its chemical symbol is BeO. Magnesium hydroxide, Mg(OH)2, occurs naturalyy. It treats constipation. Magnesium oxide, MgO, is highly refractory, therefore it is used in furnace linings. When mixed with magnesium chloride, it forms a durable cement. Magnesium sulfate, MgSO4, is used as an osmotic laxativa for rapid evacuation of teh bowel. It is also used to treat magnesium deficiency. Calcium, combined with phosphate (hydroxylapatite) is the mineral portion of human and animal bones and teeth. Calsium carbonate, CaCO3, forms chalk, marble and limestone.
 * Family: Alkali Earth Metals ||  ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||
 * Element || Symbol || Appearance || Atomic # || Atomic Mass || # of proton's || # of valence electron/s || # of shells || Melting point || Atomic Radius || Discovery Date ||  ||   ||   ||
 * Beryllium || Be || steel, grey, lightweight, brittle. || 4 || 9.012182 amu || 4 || 2 || 2 || 1278 oC || 112 pm || 1798 ||  ||   ||   ||
 * Magnesium || Mg || fairly strong, silvery-white, light-weight metal || 12 || 24.305 amu || 12 || 2 || 3 || 650.0 °C || 150 pm || 1808 ||  ||   ||   ||
 * Calcium || Ca || silvery-white, relatively soft || 20 || 40.078 amu || 20 || 2 || 4 || 839 °C || 180pm || 1808 ||  ||   ||   ||
 * strontium || Sr || grey, silvery, softer than calcium. || 38 || 87.62 || 38 || 2 || 2 || 1050K || 215pm || 1790 ||  ||   ||   ||
 * barium || Ba || silvery white || 56 || 137.33 || 56 || 2 || 6 || 998.2K || 215pm || 1808 ||  ||   ||   ||
 * radium || Ra || brilliant white when freshly prepared, but blackens on exposure to the air. || 88 || 226.02 || 88 || 2 || 7 || 973K || 215pm || 1898 ||  ||   ||   ||
 * 1. Can you see any trends in the information collected?? ||  ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||
 * All alkali earth metals are relatively a silvery-white colour. As we go down the list, the atomic number increases, along with the number of protons, number of shells, and atomic radius. |||||||||| Hovever, the melting point decreases as we go down the list. ||
 * 2. How are the elements of this family the same?? ||  ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||
 * All the elements from this family have the same amount of valence electrons. ||  ||   ||   ||   ||   ||   ||   ||   ||   ||   ||
 * 3. How are the elements of this family different?? ||  ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||
 * The elements of this family are different in various ways. Their atomic numbers are different along with the number of shells each has, their atomic radius and when they were discovered. ||  ||   ||   ||   ||
 * 2. How are the elements of this family the same?? ||  ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||
 * All the elements from this family have the same amount of valence electrons. ||  ||   ||   ||   ||   ||   ||   ||   ||   ||   ||
 * 3. How are the elements of this family different?? ||  ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||
 * The elements of this family are different in various ways. Their atomic numbers are different along with the number of shells each has, their atomic radius and when they were discovered. ||  ||   ||   ||   ||