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| chemical principles atkins download: Physical Chemistry Peter William Atkins, 1990 |
| chemical principles atkins download: Four Laws That Drive the Universe Peter Atkins, 2007-09-06 The laws of thermodynamics drive everything that happens in the universe. From the sudden expansion of a cloud of gas to the cooling of hot metal, and from the unfurling of a leaf to the course of life itself - everything is directed and constrained by four simple laws. They establish fundamental concepts such as temperature and heat, and reveal the arrow of time and even the nature of energy itself. Peter Atkins' powerful and compelling introduction explains what the laws are and how they work, using accessible language and virtually no mathematics. Guiding the reader from the Zeroth Law to the Third Law, he introduces the fascinating concept of entropy, and how it not only explains why your desk tends to get messier, but also how its unstoppable rise constitutes the engine of the universe. |
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Chemistry | Definition, Topics, Types, History, & Facts | Britannica
Apr 24, 2025 · Most of the materials that occur on Earth, such as wood, coal, minerals, or air, are mixtures of many different and distinct chemical substances. Each pure chemical substance …
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May 12, 2025 · A chemical reaction is a process in which one or more substances, the reactants, are converted to one or more different substances, the products. Substances are either …
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To describe chemical reactions, scientists use chemical equations, which make use of symbols and formulas for elements and compounds. The chemical equation for the reaction between …
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Any substance that cannot be decomposed into simpler substances by ordinary chemical processes is defined as a chemical element. Only 94 such substances are known to exist in …
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Chemical energy is a form of potential energy that is in all substances. Food is the most important source of chemical energy for living things. The chemical energy in food is converted, or …
Organic compound | Definition & Examples | Britannica
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carbon dioxide - Kids | Britannica Kids | Homework Help
Carbon dioxide is a chemical compound that is usually in the form of a gas. It is made up of one atom of carbon and two atoms of oxygen. Its chemical formula is CO 2. Carbon dioxide was …
chemistry - Kids | Britannica Kids | Homework Help
The basic substances that chemists study are called chemical elements. Each element is made up of tiny particles, or bits, called atoms. Chemical reactions involve atoms or groups of atoms. …
Chemistry | Definition, Topics, Types, History, & Facts | Britannica
Apr 24, 2025 · Most of the materials that occur on Earth, such as wood, coal, minerals, or air, are mixtures of many different and distinct chemical substances. Each pure chemical substance …
Chemical reaction | Definition, Equations, Examples, & Types
May 12, 2025 · A chemical reaction is a process in which one or more substances, the reactants, are converted to one or more different substances, the products. Substances are either …
chemical reaction - Students | Britannica Kids | Homework Help
To describe chemical reactions, scientists use chemical equations, which make use of symbols and formulas for elements and compounds. The chemical equation for the reaction between …
chemical element - Students | Britannica Kids | Homework Help
Any substance that cannot be decomposed into simpler substances by ordinary chemical processes is defined as a chemical element. Only 94 such substances are known to exist in …
Periodic table | Definition, Elements, Groups, Charges, Trends,
May 10, 2025 · The periodic table is a tabular array of the chemical elements organized by atomic number, from the element with the lowest atomic number, hydrogen, to the element with the …
chemical energy - Kids | Britannica Kids | Homework Help
Chemical energy is a form of potential energy that is in all substances. Food is the most important source of chemical energy for living things. The chemical energy in food is converted, or …
Organic compound | Definition & Examples | Britannica
Jun 6, 2025 · An organic compound is any chemical compound in which one or more atoms of carbon are covalently linked to atoms of other elements, most commonly hydrogen, oxygen, or …
Silicon | Element, Atom, Properties, Uses, & Facts | Britannica
4 days ago · Silicon, a nonmetallic chemical element in the carbon family that makes up 27.7 percent of Earth’s crust; it is the second most abundant element in the crust, being surpassed …
carbon dioxide - Kids | Britannica Kids | Homework Help
Carbon dioxide is a chemical compound that is usually in the form of a gas. It is made up of one atom of carbon and two atoms of oxygen. Its chemical formula is CO 2. Carbon dioxide was …
chemistry - Kids | Britannica Kids | Homework Help
The basic substances that chemists study are called chemical elements. Each element is made up of tiny particles, or bits, called atoms. Chemical reactions involve atoms or groups of atoms. …
