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This section introduces terms and definitions which make up the vocabulary of the language of chemistry. Starting with atoms it progresses to elements, molecules and compounds. It shows how a substance can be simply represented by a chemical formula made up of both letters and numbers. Many of the terms may be fam iliar to the layperson,
Chemistry is defined as the systematic investigation of the properties, structure, and behavior of matter and the changes matter undergoes. This general definition raises many questions. These questions are answered in the study of chemistry. Terms and basic concepts that help in understanding chemistry will be discussed in this chapter.
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Jun 23, 2022 · Chemistry is the study of matter and its interactions with other matter and energy. Matter is anything that has mass and takes up space. Matter can be described in terms of physical properties and chemical properties. Physical properties and chemical properties of matter can change. Matter is composed of elements and compounds.
In this section, you will have a quick review on all the possible definitions that can be tested in your major chemistry examinations. This is a comprehensive list of definitions that covers the most important and frequent definitions tested in past years exams. You are required to know them as questions on “definitions” are very popular.
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central to learning chemistry and progressing through all chemistry courses. You need to know the definitions of scientific terms accurately. Like all of the sciences, chemistry has a unique vocabulary. Some technical words used in chemistry will have meanings similar to the same words used in everyday speech; others will have very different ...
First Concepts and Definitions of Chemistry Chemistry- The science dealing with matter and its transformations. Matter- Anything that has mass and occupies space. Mass- The measure of the quantity of matter in anything. Atoms- The fundamental building units of which all matter is composed. Chemical symbol- One- or two-letter abbreviation for ...
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Exothermic reaction – A reaction that releases more energy than it takes in. Endothermic reaction – A reaction that absorbs more energy than it releases. Change in enthalpy or heat of reaction (∆H) – The amount of energy absorbed or released during. a chemical reaction. Rate of reaction – The rate of a chemical reaction is how quickly ...
