... Cobalt is reduced, forming an ionic compound … A-Level Chemistry Tests. [2 marks] The acid and solid need to be chosen. your working. 2 Draw one line from each context to the correct meaning. Home ... AQA. Infrared absorption data N H 3300 – 3500 (amines) O H 3230 – 3550 (alcohols) C H 2850 – 3300 O H 2500 – 3000 (acids) C N 2220 – 2260 all. Learning Objectives related to cobalt chemistry. The table shows the melting point and density of some transition elements, compared to three metals in the periodic table that are not transition elements. ELECTRODE POTENTIALS ... aqueous cobalt(II) ions..... (1) 8 Page 14 of 23 www.examqa.com (b) €€€€The table below shows some standard electrode potentials. 2 Do not write outside the box (02) G/Jun16/CH2HP Answer all questions in the spaces provided. Chemistry (7405/1) Paper 1: Inorganic and Physical Chemistry . The description below outlines one way to carry out the practical. 105 marks of short and long answer questions A-level CHEMISTRY Unit 5 Energetics, Redox and Inorganic Chemistry Wednesday 22 June 2016 Time allowed: 1 hour 45 minutes Materials For this paper you must have: the Periodic Table/Data Sheet provided as an insert (enclosed) a ruler with millimetre measurements a calculator. • Show . Author: Created by greenAPL. There are no modules. Based on real AQA past exam papers . There is no change on adding excess sodium hydroxide solution. For each of the exam boards below, there are revision notes, factsheets, questions from past exam papers separated by topic and videos. ... AQA Chemistry. H 2 O, NH 3 and Cl − can act as monodentate ligands. <= back AQA GCSE chemistry Topic 4 "Chemical Changes" revision summary REPEAT QUIZ - fresh Q's. The AS only topics are labelled AS. 2 SPECIMEN MATERIAL 0 1 This question is about mixtures and analysis. A transition metal is a metal atom that has a partially filled d sub-orbital in an atom or at-least 1 of its stable ions. francium 12 Be Key 9 beryllium 4 relative atomic mass atomic symbol name atomic (proton) number AQA AS CHEMISTRY . Chemical equilibria, Le Chatelier's principle and Kc. Learn vocabulary, terms, and more with flashcards, games, and other study tools. cobalt oxide + sulfuric acid ? Specimen 2015 v0.5 Session 2 hours . 37 terms. Information • … Based on real AQA past exam papers . questions. This page looks at some aspects of cobalt chemistry required for UK A' level exams. CHEMISTRY Foundation Tier Chemistry 2F Specimen 2018 Time allowed: 1 hour 45 Minutes ... 0 2 The word equation shows the reaction between anhydrous cobalt chloride and water. Fill in the boxes at the top of this page. are malleable (can be hammered or rolled into shape without shattering); are ductile (can be stretched out to make thin wires); have high melting points; have high density; are good conductors of electricity and heat; are shiny when polished; form coloured compounds Cobalt Chloride Paper . For this paper you must have: • the Data Booklet, provided as an insert • a ruler • a calculator. 1 (a) A student investigated the temperature change when 8 g of sodium nitrate dissolves in 50 cm3 of water. Figure 1 shows the apparatus the student used. By changing the number of electrons (either by an atom losing, or gaining electrons) - the atom forms an ion. Title: GCE Chemistry Unit CHM5 - Mark Scheme June 2002 Author: AQA Created Date: 4/17/2003 2:04:07 PM Preview. AQA, Edexcel, OCR A level Chemistry (2017) Principles of transition metal chemistry . Physical Chemistry. Identify the cobalt-containing species present in aqueous cobalt(II) sulphate and in the precipitate M. Time allowed 1 hour 45 minutes Instructions Use black ink or black ball-point pen. Learn vocabulary, terms, and more with flashcards, games, and other study tools. AQA GCSE (9-1) CHEMISTRY QUIZ on TOPIC 4 "CHEMICAL CHANGES" ... What pair of chemicals will make cobalt sulfate and water? ... Cobalt atoms lose their two electrons from the 4s orbital when they become a cobalt… [Co(H 2 O) 6] 2+ + 2OH-[Co(H 2 O) 4 (OH) 2] + 2H 2 O. Relevant physical chemistry topics (sections 3.1.1 to 3.1.4, 3.1.6 to 3.1.8 and 3.1.10 to 3.1.12) Inorganic chemistry (section 3.2) Relevant practical skills; Assessed. 59 Co cobalt 27 103 Rh rhodium 45 192 Ir iridium 77 [268] Mt meitnerium 109 59 Ni nickel 28 106 Pd palladium 46 195 Pt platinum 78 [271] Ds darmstadtium 110 63.5 Cu copper 29 108 Ag silver 47 197 Au gold 79 ... GCSE Science Chemistry Data sheet Chemistry Author: AQA Subject: GCSE Science Chemistry Keywords: This page contains the AQA GCSE Chemistry C9 Hydrocarbons Questions and kerboodle answers for revision and understanding Hydrocarbons.This page also contains the link to the notes and video for the revision of this topic.. C9.1 Crude Oils and Fuels AQA GCSE Chemistry C9 Hydrocarbons Kerboodle Answers Page No 149. a. 1 This question is about temperature changes. Relative atomic masses for Cu and Cl have not been rounded to the nearest whole number. The transition metals are as follows: However, Zn is not a transition metal… Transition Metal Cobalt Chemistry (no rating) 0 customer reviews. An ion is an atom (or group of atoms) with a positive or negative charge, formed by either losing or gaining electrons.. [2 marks] Tick two boxes. Notes. GCE CHEMISTRY UNIT 5 SPECIMEN/VERSION 1.1 10 _____ 7 4 (a) When aqueous ammonia was added to an aqueous solution of cobalt(II) sulfate, a blue precipitate M was formed. In this demonstration the equilibrium between two different coloured cobalt species is disturbed. Materials . Electrons are negatively charged, and protons are positively charged.Atoms are neutral overall, due to the fact they have equal numbers of protons and electrons. cobalt + hydrochloric acid ? Created: Mar 31, 2015 | Updated: Jul 1, 2017. This worksheet and answer sheet is aimed at post 16 chemistry students and cobalt, Co and its transition metal chemistry. holly_w99. Eye protection must be worn. A* Chemistry GCSE, IGCSE, A-Level, IB and University Chemistry Resources & Revision for all exam boards. The first row d-block elements which are also transition metals are therefore titanium, vanadium, chromium, manganese, iron, cobalt, nickel and copper. ... cobalt (II) Co²⁺ tin (II) Sn²⁺ ... AQA A-Level Chemistry (new spec) 1.3 Bonding. Cobalt (II) Chloride 6-Water - 100g : ... > Curriculum Lists > New GCSE Curriculums > Chemistry > AQA Chemistry > Curriculum Lists > New GCSE Curriculums > Chemistry > OCR Chemistry B > Curriculum Lists > New GCSE Curriculums > Chemistry > Edexcel Chemistry Chemicals > Search by A - Z Reactions of cobalt(II) ions in solution. ... AQA GCSE Science Chemistry Revision 9-1 Chemistry CHEM5 Unit 5 Energetics, Redox and Inorganic Chemistry Monday 15 June 2015 1.30pm to 3.15pm For this paper you must have: the Periodic Table/Data Sheet, provided as an insert (enclosed) a ruler with millimetre measurements a calculator. The ligands NH 3 and H 2 O are similar in size and are uncharged. Le Chatelier’s principle is used to predict a colour change. Cobalt(II) solutions produce a blue cobalt(II) hydroxide precipitate when sodium hydroxide solution is added. Start studying A Level Chemistry common ions. This worksheet and answer sheet is aimed at post 16 chemistry students and covers the transition metal: cobalt. According to the American Chemistry Council, cobalt chloride has a crystalline structure that changes as the molecules shift to make room for water molecules, leading to the color change that makes this substance ideal for detecting the presence of humidity. The simplest ion that cobalt forms in solution is the pink hexaaquacobalt(II) ion - [Co(H 2 O) 6] 2+. written exam: 2 hours; 105 marks; 35% of A-level; Questions. The water molecules are all neutral, so the overall charge on the complex ion is 3+ + 0 = 3+ The formula of the complex is written [Co(H 2 O) 6] 3+ The hexaammine nickel (II) ion at the right has six ammonia molecules surrounding the central nickel 2+ ion in an octahedral arrangement. Most metals on the Periodic Table are classed as transition metals, and these metals typically:. Start studying AQA A Level Chemistry: Inorganic. 1 Which two substances are mixtures? CHEMISTRY Index Cobalt (Co) Magnetic. Air Carbon dioxide Graphite Sodium Chloride Steel 0 1 . 7 Li lithium 3 23 Na sodium 11 39 K potassium 19 85 Rb rubidium 37 133 Cs caesium 55 [223] Fr 87 * The Lanthanides (atomic numbers 58 – 71) and the Actinides (atomic numbers 90 – 103) have been omitted. Warning: This is pretty tough. AQA. The cobalt ion has a charge (oxidation state) of 3+. These are mainly summarised from elsewhere on the site, with links available to more detailed explanations. all . 0 1 . 47 terms. COMPLEX IONS [ edit ] A complex ion is an ion comprising one or more ligands attached to a … 3.1 Physical chemistry; 3.2 Inorganic chemistry; 3.3 Organic chemistry; CIE. Notes. Instructions • Answer . Chemistry Revision Get ready for your mocks with our two-day online course on 20-21st December. New A-level 2015 The revision guides are split into physical, inorganic and organic chemistry. 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