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INTRODUCTION. Chemistry is the branch of science which studies matter—its composition, prop-erties, and changes. Scientists attempt to discover and describe matter, then deter-mine why these kinds of matter have particular characteristics and why changes in this matter occur.
SL-HL IB Chemistry Definitions Author: Darby Davis Created Date: 20130516041415Z ...
basics of chemistry that would minimize their sense of déjà vu. They are the audience for whom this book is intended. What distinguishes this textbook from other entry-level texts is its emphasis on the history of the science of chemistry. I have long believed that students who are shown how a scientific discipline came to be are
A more commonly used unit of volume is derived from the decimeter (0.1 m, or 10 cm). A cube with edge lengths of exactly one decimeter contains a volume of one cubic decimeter (dm 3). A liter (L) is the more common name for the cubic decimeter. One liter is about 1.06 quarts.
Effect of temperature on reaction rate: Increasing the temperature means the particles will have more kinetic energy and so will move faster. If the molecules are moving faster they will collide more often and, since they’ve gained kinetic energy, a larger proportion of the particles will have at least the activation energy.
17 Οκτ 2020 · In chemistry, an element is defined as a pure substance composed of atoms that all have the same number of protons in the atomic nucleus. In other words, all atoms of an element have the same atomic number .
Covalent bond: a strong bond formed between 2 atoms due to the electrostatic attraction between a shared pair of electrons and the atomic nuclei. Dative Covalent (Coordinate) bond: a type of covalent bond in which both of the electrons in the shared pair come from one atom.
