A level chemistry znote
[DOC File]Chemistry: Spring Semester Lecture Notes
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energy level than does the element ABOVE. Li Na. The period that an element is in is the same as the energy. level that its valence electrons are in. Li ( Na ( Periodicity ( there are trends in properties of elements -- left-right AND up-down trends ... Chemistry: Spring Semester Lecture Notes ...
[DOC File]Chemistry - Mole Notes
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Chemistry - Mole Notes. I. The Mole. A. When substances react they combine or break apart on the atom or molecule level. To describe what will happen in a reaction, a unit that can compare the number of atoms of each substance present is needed. B. It was determined in the lab that the atomic mass in grams of carbon - 12 (12 grams) contained 6 ...
[DOC File]AQA GCSE Biology 2014 Summary Notes / Unit 3 - Chemistry
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OCR AS Level Chemistry Summary Notes / Unit 1. C1.1.1 Atoms. Subatomic Particle Relative Mass Relative Charge Proton 1 +1 Neutron 1 0 Electron 1/2000 -1 The nucleus of an atom contains all of the positive charge. The electrons are outside the nucleus and, therefore, so is the negative charge.
[DOC File]THE MOLE
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There are four state symbols required for A-level chemistry: (s) - solid (l) - liquid (g) - gas (aq) - aqueous, or dissolved in water IONIC EQUATIONS. Many reactions that take place in aqueous solution do not involve all of the ions that are written in the equation. Some species remain in aqueous solution before and after the reaction.
[DOC File]Topic 13 - A-Level Chemistry
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This effect can be illustrated with an enthalpy level diagram: Since catalysts reduce the activation energy of a chemical reaction, the number of particles which have sufficient energy to react will therefore increase. This can be shown graphically by considering the Maxwell-Boltzmann distribution of …
[DOC File]Chemistry Notes – Gas Laws
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Pressure is the collisions that occur between gas molecules and other matter. The more collisions that occur, the greater the pressure. Standard pressure is the average pressure at sea level. 1.0 atmospheres, 760 mm/Hg, or 101 kPa. Gases have no definite shape or volume.
[DOCX File]Scheme of work Chemistry – Energy changes
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