When naming compounds rules are used. If naming ionic compounds the first name is usually a ____ while the second name is usually a ____. Metal names never change but non-metals usually change their ending with a suffix ____ replaced at the end of their names. For Example NaCl called ____. The rules are different for covalent compounds. In covalent compounds prefixes such ____ are used in naming. For example water will be called ____ while dicarbon tetrahydride will be written as ____. The compound ____ will be written as N2O5.When writing the formulas of ionic compounds we use charges of individual elements. The charges are then ____ between the elements when writing the ____. For example aluminum oxide, (Al3+ and O2-) will switch their charges to form ____. But when the charges are the same normally we ____ them and put the elements together. For example Magnesium and oxygen (Mg2+ and O2-) will be written as ____ since the charges balance out. The is even complex for polyatomic ions because normally we use ____ during switching of charges. For example Calcium Nitrate will be written as ____ because nitrate is a polyatomic ion. In writing electron configuration we use three rules. They include A____, ____ and ____ principle. Aufbau principles states that ____ needs to occupy ____ first before they occupy ____ levels. The electron configuration for ____ will therefore be 1s2, 2s2, 2p6, 3s1 and not ____. This means electron will occupy ____ sublevel first before they go to ____ sublevel. Hund's rule state that every orbital will have a ____ first before filling them up to a maximum of two electrons. While Pauli exclusion principle states that no two electrons will occupy an orbital with the ____. The two electrons must have ____ for them to occupy that orbital. The first energy level always carries a maximum of ____ electrons, the second will carry a maximum of ____ electrons and the third will carry a maximum of ____ electrons. In electron configuration, ____ electron is the number of electron in the ____ energy level of an atom. For example in the electron configuration of Aluminum 2.8.3 the valence electron will ____. If in the case of calcium of potassium with 1s2,2s2,2p6,3s2,3p6,4s1 the valence electron will one in the ____. ____ is a graphical representation of physical states of a substance under different conditions of temperature and pressure. There are different phase changes. The first is ____ is when a substance goes directly from solid to the gas state. ____ occurs when a substance goes from gas state to a solid state; it is the reverse process of su____ Melting occurs when a substance goes from a ____ state. Fusion is when a substance goes from ____ to a ____, the reverse of melting. ____ is when a substance goes from a liquid to a gaseous state. ____ occurs when a substance goes from a gaseous to a liquid state, the reverse of vaporization. ____ – the point in temperature and pressure on a phase diagram where the liquid and gaseous phases of a substance merge into a single phase. Beyond the temperature of the critical point, the substance is a ____. Triple Point occurs when both the te____ and ____ of the three phases of the substance coexist in ____. We also have heating and cooling curve that uses ____ capacity, ____ and heat of va____ to calculate energy changes.

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