Chemistry 化学 화학 Kimia الكيمياء Химия เคมีภัณฑ์
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Molar ratio in the chemical equation
We can use molar ratio in the chemical equation to determine the masses and/or volumes of reactants and products, and the concentrations of reactants and products for reactions occurring in solution. CASE 1 The rea
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A balanced chemical equation
The purpose to balance a chemical equation is for mass conservation. The total mass of reactants should be equal to the total mass of products. In another words, the number of atoms for each individual atoms should remain constant. To consider the following chemical equation: 4Fe(s) + 3O2(g) —> 2Fe2O3(s) The symbols in brackets represent…
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Structure 1.1.2
The kinetic molecular theory is a model to explain physical properties of matter (solids, liquids and gases) and changes of state. Distinguish the different states of matter. Use state symbols (s, , g and aq) in chemical equations.
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Structure 1.1.1
Elements are the primary constituents of matter, which cannot be chemically broken down into simpler substances. Compounds consist of atoms of different elements chemically bonded together in a fixed ratio. Mixtures contain more than one element or compound in no fixed ratio, which are not chemically bonded and so can be separated by physical methods.…
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