Avogadro Samenvattingen, Aantekeningen en Examens

Density - ratio of substances mass to volume. Intensive property- meaning the value is independent of the amount of substance Avogadro number - 6.022 x 10^22, 1 mole, term of measurement dimensional analysis - A method of using conversion factors and unit canceling to solve a unit conversion problem. exothermic - chemical reaction that yields a net release of energy in the form of heat endothermic - (of a chemical reaction or compound) occurring or formed with absorption of heat kinet...

AQA AS Chemistry Paper 1 – Inorganic and Physical Chemistry Predicted Paper 2023 with markscheme attached. Name …………………………………………………………………… Date ………………… 1 hour 30 minutes allowed You should have access to the AQA insert (periodic table and data sheet) to help with answering the questions. You should spend around 65 minutes on section A and 25 minutes on section B. Grade boundaries These are VERY rough guesses!...

OCR A LEVEL CHEMISTRY A H432/01 PERIODIC TABLE,ELEMENTS AND PHYSICAL CHEMISTRY GENUINE 2024 EXAM 100% COMPLETE WITH ACTUAL ANSWERS CHECK THE LAST PAGE FOR ANSWERS. 1 Several students titrate 25.00 cm3 of the same solution of sodium hydroxide, NaOH(aq) with hydrochloric acid, HCl (aq). One student obtains a smaller titre than the other students. Which procedure explains the smaller titre? A The burette readings are taken from the top of the meniscus instead of the bottom of the meniscus. ...

absolute zero Lowest possible temperature, 0K, object has minimum internal energy. acceleration Change of velocity per unit time. 00:31 01:24 activity of radioactive isotope Number of nuclei of the isotope that disintegrate per second. Becquerel (Bq) Unit of radioactive activity, 1Bq = 1 disintegration per second. amplitude Maximum displacement from equilibrium of oscillating object. angular displacement Angle an object in circular motion turns ...

Chemistry AQA AS 2023 Exam Questions And Answers Absolute temperature - ANSWER Temperature measured in Kelvin Absolute zero - ANSWER The lowest possible temperature theoretically achieveable -273.15 degrees celius or zero Kelvin Acceleration - ANSWER The stage in mass spectrometry where positive ions are speeded up by an electric field Acid rain - ANSWER Rain that has been acidified by pollutants such as sulfur dioxide Actual yield - ANSWER Mass of produc...

AQA AS level Chemistry exam 2024 questions with 100% correct answers Nucleons - ANSWERS Protons and neutrons Electrons (location) - ANSWERS Surrounding the nucleus Relative mass of an electron - ANSWERS 1/1840 Strong nuclear force - ANSWERS The way protons and neutrons are held together in the nucleus Electrostatic forces - ANSWERS The attraction between protons and electrons that hold them together in the atom Atomic Number (Z) - ANSWERS The number of protons in the nucleus Mass nu...

mass of an electron - correct answer 1/2000th of a proton relative charge and relative mass of a proton, neutron, and electron - correct answer proton: charge=+1 mass=1 neutron: charge=0 mass=1 electron: charge=-1 mass=1/2000th atomic number - correct answer the number of protons in the nucleus of an atom mass number - correct answer the sum of the number of neutrons and protons in an atomic nucleus isotopes - correct answer atoms of the same element with a different mass number an...

Handwritten notes from a High School chemistry class throughout the whole year. These notes cover the basics of chemistry from basic measurements to balancing equations. These notes were taken in conjunction with the textbook "General Chemistry" by John D. Mays. Chapters 1-3, 5, 6, 9, and 11 are covered. Chapter 1: basic measurements and units Chapter 2: atoms and substances, Avogadro's constant, and molar mass Chapter 3: atomic structure Chapter 5: ionic vs covalent bonds, the octe...

A-level Chemistry Definitions 100% Pass isotopes atoms of the same element with different numbers of neutrons atomic (proton) number the number of protons in the nucleus of an atom mass (nucleon) number the number of particles (protons and neutrons) in the nucleus ion a positively or negatively charged atom or (covalently bonded) group of atoms (molecular ion) relative isotopic mass the mass of an atom of an isotope compared with one twelfth of the mass of an atom of carbon-12 relative atom...

Absolute temperature - ANSWERS Temperature measured in Kelvin Absolute zero - ANSWERS The lowest possible temperature theoretically achieveable - 273.15 degrees celius or zero Kelvin Acceleration - ANSWERS The stage in mass spectrometry where positive ions are speeded up by an electric field Acid rain - ANSWERS Rain that has been acidified by pollutants such as sulfur dioxide Actual yield - ANSWERS Mass of product obtained in a reaction Addition polymer - ANSWERS Polymer formed when many...