Oxidising agent - Study guides, Revision notes & Summaries

Electrolysis is the... - correct answer decomposition of a liquid using electricity The electrolyte is the... - correct answer liquid that conducts electricity The anode is the ... electrode - correct answer positive The cathode is the ... electrode - correct answer negative ... are negatively-charged ions that are attracted to the anode - correct answer anions ... are positively-charged ions that are attracted to the cathode - correct answer cations Oxidation is the ... of ele...

Amount of substance equations - CORRECT ANSWERS-mass = mr x moles mol = vol x conc vol(gas) = mol x 24 (dm) PV=nRT (pressure, Pa, volume, m3, moles, -, 8.314, temp, k) Empirical formula - CORRECT ANSWERS-The simplest whole number ratio of atoms of each element in a compound Molecular formula - CORRECT ANSWERS-The number and type of atoms of each element in a molecule Celsius to Kelvin - CORRECT ANSWERSK=C+273 % yield and atom economy - CORRECT ANSWERS-% yield = (actual/ theoretical) x...

Includes criteria from As1 Chemistry- Redox. Has examples of equations with oxidising numbers and includes the ccea accepted keywords.

Edexcel iGCSE Chemistry, question and answer with rated solution Experiment for Diffusion? 1) HCl placed at one end of the test tube, ammonia solution at the other. 2) Where they meet, a ring of Ammonium Chloride appears. 3) The diagram shows that the ammonia is closer to the ring, showing that ammonia must have travelled faster, showing it's a lighter gas. Experiment for Dilution? 1) Put a coloured substance in a solvent e.g food colouring in water. 2) Over the time, the colour le...

BTEC APPLIED SCIENCE LAB REPORT ON OXIDATION AND REDUCTION. FND04: FURTHER CHEMISTRY FOR BIOSCIENCES - LAB REPORT Oxidation and Reduction (REDOX) Reactions Introduction Oxidation-reduction reactions, otherwise known as redox reactions, are fundamentally a process that involves a transfer of electrons. Oxidation can be defined as loss of electrons and reduction as gain of electrons. Therefore, oxidation results in an increase in oxidation number and reduction a decrease in oxidation numb...

Answer all the questions. 1 Which statement describes electronegativity? A A measure of the reactivity of an element. B The ability of an atom to attract an electron to become a 1– ion. C The attraction of a bonded atom for the electrons in a covalent bond. D The attraction of an atom for a lone pair of electrons. Your answer [1] 2 A chlorate(VII) ion has a 1– charge. What is the formula for sodium chlorate(VII)? A NaCl O3 B NaCl O4 C NaCl O7 D NaCl O8 ...

Group 2 Exam Questions and Answers 2023 Graded A Use the Periodic Table to deduce the full electron configuration of calcium. 1s2 2s2 2p6 3s2 3p6 4s2 Write an ionic equation, with state symbols, to show the reaction of calcium with an excess of water. Ca(s)+ 2H2O(l) → Ca2+(aq) + 2OH-(aq) + H2(g) State the role of water in the reaction with calcium. Oxidising agent Write an equation to show the process that occurs when the first ionisation energy of calcium is measured. Ca(g) → Ca+(...

Group 2 Exam Questions and Answers 2023 Graded A Use the Periodic Table to deduce the full electron configuration of calcium. 1s2 2s2 2p6 3s2 3p6 4s2 Write an ionic equation, with state symbols, to show the reaction of calcium with an excess of water. Ca(s)+ 2H2O(l) → Ca2+(aq) + 2OH-(aq) + H2(g) State the role of water in the reaction with calcium. Oxidising agent Write an equation to show the process that occurs when the first ionisation energy of calcium is measured. Ca(g) → Ca+(...

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...

Chemistry AQA A level Test Questions with Answers Graded A+ (Verified Solutions) (2024/2025) What's the Test for a Carbonyl group? - - Brady's reagent (2,4 DNPH) Orange to yellow precipitate Do Carbonyls have a lower or higher boiling point when compared to a corresponding Alcohol? - - Lower Do Carbonyls have a higher or lower boiling point when compared to a corresponding Alkane? - - Higher Do Carbonyls dissolve in water? - - Yes limited association with water molecules What's the t...