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Chemistry is a universal language used by people around the world. So, we as scientists can communicate with each other about chemistry even if we speak different languages in our day-to-day lives! All we have to do is follow consistent rules when talking about certain scientific concepts.
4 Li (s) + O 2 (g) 2 Li 2 O (s) The state symbols in brackets show the physical state of. the substance at the reaction temperature. Solid (s), liquid (l), gas (g), or dissolved in water (aq). aq is called aqueous which comes. from the Latin word aqua meaning water. If you do not know the state of a substance.
Nov 13, 2022 · Explain the meaning of the formula of an ionic solid such as NaCl. Define molecular weight, formula weight, and molar mass. Calculate any of these from any chemical formula. Given a chemical formula, express the mole ratios of any two elements, or the mole fraction of one of its elements.
Feb 13, 2019 · Solutions to exercises. 3.1: Generic (Abbreviated) Structures (aka R Groups) is shared under a license and was authored, remixed, and/or curated by LibreTexts. It is not always necessary to draw the entire structure of a compound. The correct use of the "R group" is explained.
May 18, 2021 · In this chapter, we will learn the meaning of the symbols used in chemistry to represent elements and compounds, and the information these symbols convey microscopically and macroscopically.
In this chemistry tutorial, we explain the difference between polar bonds and non-polar bonds. We then tell you the definition of a polar molecule, and what a non-polar molecule is. Last, but not least, you learn what a dipole moment is.
The study of the absorption or release of heat during a chemical reaction. thermodynamic stability. The condition of a system being in its lowest energy state with its environment (equilibrium). thermodynamics. The study of the effects of changing temperature, volume or pressure (or work, heat, and energy) on a macroscopic scale.
