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SL-HL IB Chemistry Definitions Author: Darby Davis Created Date: 20130516041415Z ...
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.
Avogadro’s law : one mole of any gas occupies a volume of 24 dm3 or 24 l at room temperature and pressure (r.t.p) and equal volumes of all gases measured at rtp must contain the same number of molecules
Periodic Table. The Royal Society of Chemistry's interactive periodic table features history, alchemy, podcasts, videos, and data trends across the periodic table. Click the tabs at the top to explore each section.
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.
It depends on its specific heat capacity, defined as: The energy required to raise 1 g of substance by 1 K without a change of state. Using this energy value (q), enthalpy change per mole (kJ mol-1) of substance can be calculated. ∆H represents the enthalpy change per mole of substance.
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.
