The Facts. The reactions with oxygen. Word Equation: Calcium + Bromine >>>> Calcium bromide Reaction of Calcium with Oxygen Calcium metal slowly oxidizes in air, becoming encrusted with white \(CaO\) and \(CaCO_3\), which protect from attack by air. The usual reaction product from a reaction between calcium and oxygen has the formula CaO and therefore contains one atom of each element per molecule. Bromine = Br2, with a charge of 1-, since it tends to gain one electron when it reacts (it is also a diatomic molecule, so it forms in pairs of atoms, hence the subscript 2). Calcium reacts slowly with water. Reactions with Group 2 Elements. The reaction between strontium and nitrogen gas (which has the formula N2) produces strontium nitride, which has the formula Sr3N2. On the whole, the metals burn in oxygen to form a simple metal oxide. This is in contrast with magnesium, immediately above calcium in the periodic table, which is virtually unreactive with cold water. This is due to Calcium being oxidation state +2 and Oxygen oxidation state is -2, this means when formed in a compound they cancel each other out to give CaO. Alkaline earth metals also react with oxygen, though not as rapidly as Group 1 metals; these reactions also require heating. It explains why it is difficult to observe many tidy patterns. Incompatibilities & Reactivities Water (liberates heat), fluorine, ethanol [Note: Reacts with water to form calcium hydroxide.] This page looks at the reactions of the Group 2 elements - beryllium, magnesium, calcium, strontium and barium - with air or oxygen. The balanced equation is: 3Sr + N2 -> Sr3N2. For the best answers, search on this site https://shorturl.im/awpBG. Part of NCSSM CORE collection: This video shows the reaction of Ca metal with oxygen. When ignited, Calcium burns to give calcium xxide. Calcium = Ca, with a charge of 2+, since it tends to lose two electrons when it reacts. The elements of Group 2 are beryllium, magnesium, calcium, strontium, barium, and radioactive radium. Formula and structure: Calcium oxide chemical formula is CaO and its molar mass in 56.0774 g mol-1.The molecule is formed by the calcium cation Ca +2 and the oxygen anion O-2, which form a ionic bond.The calcium oxide ionic lattice is cubic and similar to NaCl lattice, with an ion surrounded by 6 opposite charge-ion. Combination of Calcium to other chemical: Calcium + chlorine= CaCl2 Calcium + Phosphorus=Ca3P2 Calcium phosphide Calcium + Oxygen + Silicon=CaSiO3 They called as Calsium Silicate The mechanism of oxygen production in photosynthesis remains unresolved, despite many studies. The reaction forms calcium hydroxide, Ca(OH) 2 and hydrogen gas (H 2). Calcium (Ca) is a metal element located in group 2 of the periodic table, and oxygen (O) is a nonmetal element located in group 16. Formation of simple oxides. Reaction of calcium with water. 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