Covalent (sharing of electron pairs) Ionic ( electrostatic attraction between oppositely charged ions)
|
|
- May Cannon
- 6 years ago
- Views:
Transcription
1
2 Covalent (sharing of electron pairs) Ionic ( electrostatic attraction between oppositely charged ions) Metallic (electrostatic attraction between + metal ions and delocalised electrons)
3 Group 1 ions 1+ Group 2 ions 2+ Group 3 ions 3+ Group 4 ions 4-/+ Group 5 ions 3-/5+ Group 6 ions 2- Group 7 ions 1- Magnesium chloride Magnesium 2+ Chloride 1- Formula: Magnesium oxide Magnesium 2+ Oxide 2- Formula: Other ions: Ammonium Carbonate Nitrate Sulphate Hydroxide Aluminium oxide: Calcium nitrate: Sodium carbonate: Potassium sulphate: Aluminium sulphate: Aluminium hydroxide: Properties Solids Explanations High melting points and high boiling points Don't conduct as solids Conduct when molten or dissolved
4 Properties Explanations High melting points and high boiling points Good conductors of heat Good conductors of electricity Properties ( simple covalent) Explanation low melting points and low boiling points Properties ( giant covalent) ExplanationS high melting points and high boiling points Diamond is hard Diamond does not conduct Graphite is slippery & soft Graphite conducts electricity
5 Nano tubes and fullerenes 1nm= Nano science applications Uses: Pros: Cons:
6 High density polymer Low density polymer Uses: Uses: Formed from same monomer under different conditions (temperatures, pressures, catalysts) Thermosetting polymer Properties: Thermosoftenig polymer Properties: Explanation: Explanation: Uses: Uses:
7 Relative formula mass Find the atomic mass of each element in the compound and add up all formula masses. Water: Calcium carbonate: Aluminium hydroxide: Aluminium sulfate: Ammonium carbonate: a mole Each atom has a tiny mass and it is difficult to measure The mass. It is easier to find the mass of many atoms. Scientists have found the mass of x1023 many atoms. This number is called 1 mole. The mass of one mole of an atom is equal to the atomic mass in grams. The mass of one mole of a compound is equal to the relative formula mass in grams. 1 mole of water = 1 mole of carbon dioxide = 1 mole of potassium iodide = percentage by mass calculations Example: what is the % by mass of hydrogen in water? There are two hydrogen atoms in water with a total atomic mass of 2. The formula mass of water is 18. The percentage mass of hydrogen is therefore 2/18 x100 = 11% Find the % by mass of oxygen in each compound Calcium carbonate: Aluminium hydroxide: Aluminium sulfate: Ammonium carbonate:
8 empirical formula the empirical formula is the simplest ratio of elements in a compound. empirical formula & molecular formula Switching between the two using the respective formula masses: finding he empirical formula from % by mass or mass What are the steps?
9 A compound contains 39.4% by mass of iron and the rest is oxygen. What is the empirical formula? If 1.27gRams of copper made 1.59grams of copper oxide, what is the empirical formula of the copper oxide formed? Reacting mass calculations using the relative formula masses and the idea of moles we can calculate the amounts of products and reactants for a chemical reaction: How much carbon dioxide would be produced from 6 grams of carbon? How much oxygen would you need? How much carbon do you need to produce grams of carbon dioxide?
10 Copper oxide reacts with sulfuric acid to form copper sulphate And water. If 1.59 grams of copper oxide were used, how much copper sulphate is made? Sulphur reacts with oxygen to form sulphur trioxide. If 100 tonnes of sulphur are burnt in a day, how much sulphur trioxide is produced in a week? Percentage yield The student produced 2.2 grams of copper sulphate Instead of 2.8 grams. What is the percentage yield? Percentage yield- why not always 100%?
11 Hydrated copper sulphate vs dehydrated copper sulphate the forward reaction is endothermic as you need to supply heat to remove the water. water is given off as steam. The backward reaction is exothermic. Some of the water added evaporates as a large amount of heat is released. Definition: Definition: Temperature of surroundings: Temperature of surroundings: Energy profile diagram: Energy profile diagram:
12 Rate definition: Collision theory: Concentration Surface area Factors that affect the rate of reacionexplanations Temperature Catalyst
13 How to find the rate experimentally Things to look out for:... the amount of reactant used So... the amount of product made.... amounts of reactants used so... total amount of product made.
14 Acids are proton...bases are proton... The four types of bases are:... Bases that are soluble in water are called alkalis. Alkalis form oh- ions in solution and tend to be metal hydroxides and ammonia. When acids and bases react, the products can differ: Acid + metal oxide ->... Acid + metal carbonate ->... Acid + metal hydroxide ->... Acid + ammonia ->... Examples: Acids react with bases to make salts. Hydrochloric acid makes...salts Sulphuric acid makes...salts Nitric acid makes...salts Ammonia makes...salts Acids react with alkalis to make salt and water. The ionic equation for all acid-alkali reactions is:... Useful salts: Sodium chloride... Epsom salt (Magnesium sulphate) Ammonium nitrate...
15 Salt preparation method Soluble salt Soluble salt Insoluble salt Titration ( acid + alkali) Excess base method (insoluble base + acid) Precipitation method
16 Electrolysis means 'splitting a compound using electricity'. Draw a labelled diagram to show how you would electrolyse molten lead bromide. Label and define the anode, cathode, anion, cation, electrolyte, oxidation, reduction. Anode half equation (oxidation): Cathode half equation (reduction): When an ionic compound is dissolved in water and the resulting solution is electrolysed, the products at the anode and cathode may differ depending on the position of the ions in the reactivity series.this is because water also consists of ions which are attracted to the anode and cathode. Sodium chloride solution Cations present: Anions present: Cathode reaction: Anode reaction: Copper sulphate solution Cations present: Anions present: Cathode reaction: Anode reaction:
17 Important electrolysis case studies Electrolysis of brine Electrolyte: Cathode reaction: Anode reaction: Overall equation: Products: Product uses: Diagram: Electrolysis of bauxite Electrolyte: Cathode reaction: Anode reaction: Overall equation: Products: Anode replacement: Role of cryolite: Diagram: Electroplating Electrolyte: Cathode reaction: Anode reaction: Overall equation: Products: Product uses: Copper purification Electrolyte: Cathode reaction: Anode reaction: Overall equation: Products: Product uses: Diagram: Diagram:
18 Paper chromatography is used to separate colours in inks and dyes. Mobile phase:... Stationary phase:... How to prevent solvent from escaping:... Why to use pencil to draw base line:... How to know which colour dissolved best:... How to set up the experiment. How to interpret the results. gas chromatography is used to separate mixtures of Volatile liquids and gases. Mobile phase:... Stationary phase:... How mixture is separated:... Meaning of retention time:... How to interpret the chromatogram:... The role of the mass spectrometer...
Atomic Structure. Same atomic number Different mass number
Mass number Number of protons and neutrons Atomic number Number of protons Atomic Structure Cl 35 17 Atoms of the same element can have different numbers of neutrons - these atoms are called isotopes of
More informationAtomic Structure. Same atomic number Different mass number
Mass number Number of protons and neutrons Atomic number Number of protons Atomic Structure Cl 35 17 Atoms of the same element can have different numbers of neutrons - these atoms are called isotopes of
More informationfor sodium ion (Na + )
3.4 Unit 2 Chemistry 2 Throughout this unit candidates will be expected to write word equations for reactions specified. Higher tier candidates will also be expected to write and balance symbol equations
More informationReview Chemistry Paper 1
Atomic Structure Topic Define an atom and element. Use scientific conventions to identify chemical symbols Identify elements by chemical symbols Define compound Use chemical formulae to show different
More informationC2 REVISION CHAPTER 1 STRUCTURES & BONDING
C2 REVISION CHAPTER 1 STRUCTURES & BONDING Draw the symbol for sodium include its mass number and atomic number (what do they tell us) Complete the table Relative Charge Relative Mass Use pictures and
More informationC2.1 Structure and bonding
C2.1 Structure and bonding C2 1.1 Chemical bonding Key words: A compound contains two or more elements which are chemically combined Covalent bonding sharing electrons Ionic bonding transferring electrons
More informationC2 Chemistry. Key Recall Questions
C Chemistry Additional Science Key Recall Questions *Cover up the answers, ask yourself a question (or get your partner to ask you), if you get it right then tick the chart, wrong put a cross. Keep practising
More informationAtomic Structure. Same atomic number Different mass number
Mass number Number of protons and neutrons Atomic number Number of protons Atomic Structure Cl 35 17 Atoms of the same element can have different numbers of neutrons - these atoms are called isotopes of
More informationAll you need to know about Additional Science
All you need to know about Additional Science Chapters in this unit 1. Structures and bonding 2. Structures and properties 3. How much? 4. Rates of reaction 5. Energy and reactions 6. Electrolysis 7. Acids,
More information(i) The atomic number of an atom is the number of... (ii) The mass number of an atom is the number of...
C2 Essential Questions Atomic Structure Q1.This question is about atomic structure and elements. (a) Complete the sentences. (i) The atomic number of an atom is the number of... (ii) The mass number of
More informationRates. 2 How do you show that concentration affects rate (6)?
1 What do you see when magnesium is added to an acid? 2 How do you show that concentration affects rate (6)? 3 Why do catalysts work for a long time before they need to be replaced? A Fizzing and the magnesium
More informationEdexcel Chemistry Checklist
Topic 1. Key concepts in chemistry Video: Developing the atomic model Describe how and why the atomic model has changed over time. Describe the difference between the plum-pudding model of the atom and
More informationAQA Chemistry Checklist
Topic 1. Atomic structure Video: Atoms, elements, compounds, mixtures Use the names and symbols of the first 20 elements in the periodic table, the elements in Groups 1 and 7, and other elements in this
More information4.4.1 Reactivity of metals Metal oxides The reactivity series. Key opportunities for skills development.
4.4 Chemical changes Understanding of chemical changes began when people began experimenting with chemical reactions in a systematic way and organising their results logically. Knowing about these different
More informationC2 Revision Pack (Please keep this pack with you)
Name: C2 Revision Pack (Please keep this pack with you) Follow all the steps below... 1) Practice all the maths and working scientifically questions PRACTICE ALL THESE QUESTIONS! Maths and Science Skills
More informationIGCSE TEST_ (Ch. 2,3,4,5,6) Name... Date...
IGCSE TEST_ (Ch. 2,3,4,5,6) Name... Date... 1 Winston Churchill, a British Prime Minister, had his false teeth electroplated with gold. The teeth were coated with a thin layer of carbon and were then placed
More informationPersonalised Learning Checklists Edexcel Combined: Chemistry Paper 1
Edexcel (combined) Chemistry Topics (1SC0) from 2016 - Paper 1 (Topic 1 parts a&b) Topic Student Checklist R A G Describe how the Dalton model of an atom has changed over time because of the discovery
More informationC1 REVISION 5.1 Atomic Structure
C1 REVISION 5.1 Atomic Structure Draw the symbol for sodium include its mass number and atomic number (what do they tell us) Complete the table Relative Charge Relative Mass Balance the following equation:
More informationYEAR 10- Chemistry Term 1 plan
YEAR 10- Chemistry Term 1 plan 2016-2017 Week Topic Learning outcomes 1 1. The particulate nature of matter State the distinguishing properties of solids, liquids and gases. Describe the structure of solids,
More informationGCSE Additional Science
GCSE Additional Science Module C5 Chemicals of the Natural Environment: What you should know Name: Science Group: Teacher: each of the statements to help focus your revision: R = Red: I don t know this
More informationPersonalised Learning Checklists AQA Chemistry Paper 1
AQA Chemistry (8462) from 2016 Topics C4.1 Atomic structure and the periodic table State that everything is made of atoms and recall what they are Describe what elements and compounds are State that elements
More informationAQA Chemistry (Combined Science) Specification Checklists. Name: Teacher:
AQA Chemistry (Combined Science) Specification Checklists Name: Teacher: Paper 1-4.1 Atomic structure and the periodic table 4.1.1 A simple model of the atom, symbols, relative atomic mass, electronic
More information5.4 Chemical changes Reactivity of metals Metal oxides The reactivity series. Key opportunities for skills development
5.4 Chemical changes Understanding of chemical changes began when people began experimenting with chemical reactions in a systematic way and organising their results logically. Knowing about these different
More information3.4 Unit 2: Chemistry 2
3.4 Unit 2: Chemistry 2 Throughout this unit candidates will be expected to write word equations for reactions specified. igher Tier candidates will also be expected to write and balance symbol equations
More informationPersonalised Learning Checklists AQA Trilogy Chemistry Paper 1
AQA TRILOGY Chemistry (8464) from 2016 Topics T5.1 Atomic structure and the periodic table State that everything is made of atoms and recall what they are Describe what elements and compounds are State
More informationGlobe Academy Science Department C2 and P2 GCSE Additional Science Homework Booklet Spring 1 Contents: Date Set. Feedback/ Marking.
Globe Academy Science Department C2 and P2 GCSE Additional Science Homework Booklet Spring 1 Contents: Topic 1 Revision Questions on Chemistry 2 Oxides, Hydroxides and Ammonia 3 Electrolysis and Electroplating
More informationPaper Atomic structure and the periodic table
Paper 1 4.1 Atomic structure and the periodic table 4.1.1 A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes Use the names and symbols of the first 20 elements in
More informationAQA GCSE CHEMISTRY (9-1) Topic 1: Atomic Structure and the Periodic Table
AQA GCSE CHEMISTRY (9-1) Topic 1: Atomic Structure and the Periodic Table 4.1.1 Atoms, elements and compounds 4.1.1.1 Atoms, elements and compounds All substances are made of atoms. An atom is the smallest
More informationExtracting metals QuestionIT
Extracting metals QuestionIT 1. What is an ore? Metal compound in a rock. 2. What is produced when metals react with oxygen? Metal oxide. 3. What is this process called and why? Oxidation, gain of oxygen.
More informationIGCSE Double Award Extended Coordinated Science
IGCSE Double Award Extended Coordinated Science Chemistry 5 - Electricity and Chemistry Electrolysis You need to know that electrolysis is: - The breakdown of ionic substances into their constituent elements
More informationAdditional Science Chemistry
Additional Science Chemistry C2 Core Questions and Keywords and Definitions Question How did Mendeleev arrange the elements known at the time into a periodic table? How did Mendeleev use his table? Where
More informationElectrolysis. Specification points. Year 11 Electrolysis
Electrolysis Specification points Year Electrolysis The process of electrolysis When an ionic compound is melted or dissolved in water, the ions are free to move about within the liquid or solution (the
More informationChemistry (separate) for November PPE
1.1 Elements and 1.2 Atoms, formulae and Chapter 1 Atomic Structure and Periodic Table Identify symbols of elements from the periodic table Recognise the properties of elements and. Identify the elements
More informationCHEMISTRY 2b SUMMARY
CHEMISTRY 2b SUMMARY Items in ITALLICS are HIGHER TIER NLY C2.4.1 RATES F REACTIN Speeding up, or slowing down, chemical reactions is important in everyday life and in industry The rate of a chemical reaction
More informationSeparate Science: Chemistry Paper 1. Knowledge Organisers. Chemistry Paper 1 17 th May AM 1h 45min. Atomic Structure The Periodic Table
Separate Science: Chemistry Paper 1 Chemistry Paper 1 17 th May AM 1h 45min Topics in the Paper: C1 C2 Atomic Structure The Periodic Table Knowledge Organisers C3 C4 C5 C6 C7 Structure and Bonding Chemical
More informationUnit 4: Chemical Changes (Higher Content)
Metals react with oxygen to produce metal oxides. E.g. Copper + Oxygen > Copper Oxide The reactions are oxidation reactions because the metals gain oxygen. Reactivity of Metals Metal Extraction Metals
More informationChapter 6: Chemical Bonding
Chapter 6: Chemical Bonding Learning Objectives Describe the formation of ions by electron loss/gain to obtain the electronic configuration of a noble gas. Describe the formation of ionic bonds between
More information4.4. Revision Checklist: Chemical Changes
4.4. Revision Checklist: Chemical Changes Reactivity of metals When metals react with other substances the metal atoms form positive ions. The reactivity of a metal is related to its tendency to form positive
More information(a) Complete Figure 9 by placing one tick in each row to show whether the salt is soluble or insoluble. salt soluble insoluble.
1 The method used to prepare a salt depends on its solubility in water. (a) Complete Figure 9 by placing one tick in each row to show whether the salt is soluble or insoluble. ammonium chloride salt soluble
More informationAQA Chemistry Checklist
Topic 1. Atomic structure Video: Atoms, elements, compounds, mixtures Use the names and symbols of the first 20 elements in the periodic table, the elements in Groups 1 and 7, and other elements in this
More informationAngel International SchoolManipay
Grade OL Angel International SchoolManipay 2 nd Term Examination March, 2016 Chemistry Duration: 3 Hours 1. Which property is common to calcium, potassium and sodium? a) Their atoms all lose two electrons
More informationThe electrolysis of sodium chloride solution produces useful substances. covalent ionic non-metallic
1 The electrolysis of sodium chloride solution produces useful substances. (a) (i) Choose a word from the box to complete the sentence. covalent ionic non-metallic Electrolysis takes place when electricity
More informationMC 17 C - 6 SECTION - I
SECTION - I (40 marks) Compulsory : Attempt all questions from this section. Question 1. (a) Name the gas in each of the following : An alkaline gas which gives dense white fumes with hydrogen chloride.
More informationAnswer all questions in the spaces provided. 1 The diagrams show the sub-atomic particles in four different atoms.
2 Answer all questions in the spaces provided. 1 The diagrams show the sub-atomic particles in four different atoms. Atom A Atom B Atom C Atom D Use the Chemistry Data Sheet to help you to answer these
More informationEdexcel Chemistry Checklist
Topic 1. Key concepts in chemistry Video: Atomic Structure Recall the different charges of the particles that make up an atom. Describe why atoms have no overall charge. Use the periodic table to identify
More informationEdexcel Chemistry Checklist
Topic 1. Key concepts in chemistry Video: Developing the atomic model Describe how and why the atomic model has changed over time. Describe the difference between the plum-pudding model of the atom and
More informationEDEXCEL IGCSE chemistry (double award)
EDEXCEL IGCSE chemistry (double award) Section 1: Principles of chemistry a) States of matter 1.1 understand the three states of matter in terms of the arrangement, movement and energy of the particles
More informationAdditional Science. Chemistry CH2FP. (Jun15CH2FP01) General Certificate of Secondary Education Foundation Tier June 2015.
Centre Number Surname Candidate Number For Examiner s Use Other Names Candidate Signature Examiner s Initials Question Mark Additional Science Unit Chemistry C2 Chemistry Unit Chemistry C2 Thursday 14
More informationAQA TRILOGY Chemistry (8464) from 2016 Topics T5.1 Atomic structure and the periodic table (Paper 1) To pic. Student Checklist
Personalised Learning Checklist AQA TRILOGY Chemistry (8464) from 2016 s T5.1 Atomic structure and the periodic table (Paper 1) State that everything is made of atoms and recall what they are 5.1.1 A simple
More informationElectrodes are normally made out of inert (unreactive) materials. Graphite and platinum are common electrode materials.
Electrolysis Electrolysis is using an electric current to break up an ionic compound to form elements. Covalent compounds can t be split up by electrolysis. Terms used in electrolysis: Electrolyte - the
More information3.2.6 Group II. Trends in Chemical properties. 164 minutes. 161 marks. Page 1 of 19
3.2.6 Group II Trends in Chemical properties 164 minutes 161 marks Page 1 of 19 Q1. (a) A small sample of barium metal was added to water in a flask. When the reaction had ceased, the contents of the flask
More informationQ1. As the world population increases there is a greater demand for fertilisers.
Q1. As the world population increases there is a greater demand for fertilisers. (a) Explain what fertilisers are used for............. (b) The amount of nitrogen in a fertiliser is important. How many
More information4.4. Revision Checklist: Chemical Changes
4.4. Revision Checklist: Chemical Changes Reactivity of metals When metals react with other substances the metal atoms form positive ions. The reactivity of a metal is related to its tendency to form positive
More informationFORM 4 CHEMISTRY - SUMMER REVISION WORK
Form 3 Syllabus: FORM 4 CHEMISTRY - SUMMER REVISION WORK Chapter 1: STATES OF MATTER Converting between the 3 states of matter Application of kinetic theory to changes of state Diffusion Physical and chemical
More informationFoundation Year Programme. Entrance Tests CHEMISTRY SPECIFICATION. For NUFYP SET 2019
Foundation Year Programme Entrance Tests CHEMISTRY SPECIFICATION For NUFYP SET 2019 V1.0 October 2018 2 Standard AT Sample Material Chemistry 1. Atomic structure 1.1 Describe the structure of the atom
More informationICSE Chemistry Model Paper-9
ICSE Chemistry Model Paper-9 Answers to this Paper must be written on the paper provided separately. You will not be allowed to write during the first 15 minutes. This time is to be spent in reading the
More informationICSE Board. Class X Chemistry. Board Paper Time: 1½ hrs Total Marks: 80
ICSE Board Class X Chemistry Board Paper 2013 Time: 1½ hrs Total Marks: 80 General Instructions: 1. Answers to this paper must be written on the paper provided separately. 2. You will NOT be allowed to
More informationSeparate Award Paper 1. Chemistry
5 th Year Separate Award Paper 1 Chemistry Practice Paper 1 Instructions: Attempt ALL the questions. Make your answers in the spaces provided on the question paper. Mark allocations are given in brackets.
More informationMARIYA INTERNATIONAL SCHOOL. Work sheet I. Term I. Level 9 Chemistry [PAPER 1-MCQ] Name: ELECTRICITY AND CHEMISTRY
MARIYA INTERNATIONAL SCHOOL Work sheet I Term I Level 9 Chemistry [PAPER 1-MCQ] Name: ELECTRICITY AND CHEMISTRY 1. The diagram shows how aluminium is manufactured by electrolysis. What are the anode and
More informationSame theme covered in Combined but extra content Extra parts atomic symbols (first 20, Group 1 and Group 7)
Co-teaching document new ELC Science 5960 and Foundation Level GCSE Combined Science: Trilogy (8464) Chemistry: Component 3 Elements, mixtures and compounds ELC Outcomes Summary of content covered in ELC
More informationOCR Chemistry Checklist
Topic 1. Particles Video: The Particle Model Describe the main features of the particle model in terms of states of matter. Explain in terms of the particle model the distinction between physical changes
More informationC 2 H 5 OH (g) Why does the mixture from the separator contain ethanol and water?
Q1.In industry ethanol is produced by the reaction of ethene and steam at 300 C and 60 atmospheres pressure using a catalyst. The equation for the reaction is: C 2 H 4 (g) + H 2 O (g) C 2 H 5 OH (g) The
More informationNaming salts. Metal Acid Salt. Sodium hydroxide reacts with Hydrochloric acid to make Sodium chloride
Naming salts A salt is any compound formed by the neutralisation of an acid by a base. The name of a salt has two parts. The first part comes from the metal, metal oxide or metal carbonate. The second
More informationYear 10 Chemistry TRIPLE Learning Cycle 4 Overview Can a knowledge of atomic structure allow us to predict how elements will react with eachother?
Learning Cycle Overview: Year 10 Chemistry TRIPLE Learning Cycle 4 Overview Can a knowledge of atomic structure allow us to predict how elements will react with eachother? Commented [T1]: Good overarching
More informationAngel International School - Manipay 2 nd Term Examination April, 2017 Chemistry
Grade 09 Angel International School - Manipay 2 nd Term Examination April, 2017 Chemistry Duration: 2.30 Hours Index No:- Part -1 1) Select most suitable answers and underline them. 1) The diagram shows
More informationDescribe how the inter-conversion of solids, liquids and gases are achieved and recall names used for these inter-conversions
Understand the arrangements, movements and energy of the particle in each of the 3 states of matter : solid, liquid and gas Describe how the inter-conversion of solids, liquids and gases are achieved and
More informationQ1. The electrolysis of sodium chloride solution produces useful substances. (a) (i) Choose a word from the box to complete the sentence.
Q1. The electrolysis of sodium chloride solution produces useful substances. (a) (i) Choose a word from the box to complete the sentence. covalent ionic non-metallic Electrolysis takes place when electricity
More informationST EDWARD S OXFORD. Lower Sixth Entrance Assessment. November Chemistry. 1 Hour. Candidates name:... St Edward's School 1
ST EDWARD S OXFORD Lower Sixth Entrance Assessment November 2013 Chemistry 1 Hour Candidates name:... St Edward's School 1 St Edward's School 2 1. Complete the table below. Element calcium Symbol Pb S
More informationOCR Chemistry Checklist
Topic 1. Particles Video: The Particle Model Describe the main features of the particle model in terms of states of matter. Explain in terms of the particle model the distinction between physical changes
More informationCHEMISTRY. SCIENCE Paper 2
CHEMISTRY SCIENCE Paper 2 (Two hours) Answers to this Paper must be written on the paper provided separately. You will not be allowed to write during the first 15 minutes. This time is to be spent in reading
More informationYear 10 Chemistry. Practice questions. Topics
Year 10 Chemistry Practice questions Topics 1 Group 1 2 Group 7 3 Reactivity series 4 Air and Water 5 Rates of reaction 6 Electrolysis 7 Acids, Alkali and Salts Objective: Evaluate group 1 & 7 reactivity
More informationOCR Chemistry Checklist
Topic 1. Particles Video: The Particle Model Describe the main features of the particle model in terms of states of matter. Explain in terms of the particle model the distinction between physical changes
More informationChemical measurements QuestionIT
Chemical measurements QuestionIT 1. What is the law of conservation of mass? Mass of reactants = mass products. 2. Why might some reactions appear to show a change in mass? A reactant or a product is a
More informationusing simple distillation and paper chromatography practical to obtain a
2.11 Core practical: Investigate the composition of inks using simple distillation and paper chromatography Paper 1 & 2 Topic 1 What do you need to be able to do? Practical: Description Investigate the
More informationDescribe the structure and bonding in a metallic element. You should include a labelled diagram in your answer. ... [3] ...
3 Gallium is a metallic element in Group III. It has similar properties to aluminium. (a) (i) Describe the structure and bonding in a metallic element. You should include a labelled diagram in your answer.
More informationChemistry. Exam Choice. Student Number PRELIMINARY COURSE EXAMINATION. Total marks 75. General Instructions
Student Number Exam Choice 2008 PRELIMINARY COURSE EXAMINATION Chemistry Total marks 75 General Instructions Reading time 5 minutes Working time 2 hours Write using black or blue pen Draw diagrams using
More informationBUSIA SUB-COUNTY JET 2016
Name Index No.. School... 233/1 CHEMISTRY THEORY Paper 1 Time: 2 Hours BUSIA SUB-COUNTY JET 2016 Kenya Certificate of Secondary Education (K.C.S.E) INSTRUCTIONS TO CANDIDATES. Answer all the questions
More informationAngel International School - Manipay 1 st Term Examination November, 2015
Grade 11B Angel International School - Manipay 1 st Term Examination November, 2015 Chemistry - I Duration: 1.00 Hour Part 1 1) A liquid boils at a temperature of 100 o C. Which other property of the liquid
More informationIGCSE Co-ordinated Sciences Chemistry Glossary
IGCSE Co-ordinated Sciences Chemistry Glossary acid = any substance that produces hydrogen ions, H+, when dissolved in water acidic solution = a solution with a ph less than 7 acid rain = rain with a ph
More informationC2 REVISION CHAPTER 1 Structure & Bonding
C2 REVISION CHAPTER 1 Structure & Bonding Chemical Bonding Elements react to form compounds by what 3 methods? What do atoms of metals in Group 1 make when they combine with atoms of non- metals in Group
More informationFigure 1. Describe what happens when two atoms of potassium react with one atom of sulfur. Give your answer in terms of electron transfer
Q1.Figure 1 shows the outer electrons in an atom of the Group 1 element potassium and in an atom of the Group 6 element sulfur. Figure 1 (a) Potassium forms an ionic compound with sulfur. Describe what
More informationNational 4/5 Chemistry
National 4/5 Chemistry Homework Unit 1 Chemical Changes and Structure Please do not write on these booklets questions should be answered in homework jotters. Part 1 Introduction to Unit 1 1. Which box
More informationflame test acidified silver nitrate solution added
1 The results of two tests on solid X are shown. test aqueous sodium hydroxide added acidified silver nitrate added observation green precipitate formed yellow precipitate formed What is X? copper(ii)
More informationIn 1807 Davy did an electrolysis experiment to produce potassium. Davy first tried to electrolyse a solid potassium salt to produce potassium
Q1. This question is about potassium. (a) Humphrey Davy was a professor of chemistry. In 1807 Davy did an electrolysis experiment to produce potassium. Davy first tried to electrolyse a solid potassium
More informationCHEMISTRY CORE PRACTICALS
CHEMISTRY CORE PRACTICALS Science (9-1) Combined Science / Chemistry Core Practicals www.chemistryinfo.co.uk Modified 23/03/2018 (MJB) Core Practical INDEX Paper 1 Paper 2 CP1a: Topic: 2.11 Investigate
More informationLondon Examinations IGCSE
Centre No. Candidate No. Paper Reference 4 3 3 5 2 H Paper Reference(s) 4335/2H London Examinations IGCSE Chemistry Paper 2H Higher Tier Wednesday 21 May 2008 Afternoon Time: 2 hours Surname Signature
More informationElectrolysis. Question Paper. Cambridge International Examinations. Score: /48. Percentage: /100
Electrolysis Question Paper Level Subject Exam oard Topic ooklet O Level hemistry ambridge International Examinations Electrolysis Question Paper Time llowed: 58 minutes Score: /48 Percentage: /100 1 queous
More information1 Chemical bonds, Ionic, Covalent, Metallic How bond + structure relate to props Structure + bonding carbon
1 Chemical bonds, Ionic, Covalent, Metallic 2 2 24 3 38 4 How bond + structure relate to props 50 5 63 6 82 7 Structure + bonding carbon 97 8 122 9 131 10 Bulk + surface properties inc nano particles 145
More informationCombined Science Chemistry Academic Overview
Combined Science Chemistry Academic Overview 2018-2019 Science Term 1.1 Term 1.2 Term 2.1 Term 2.2 Term 3.1 Term 3.2 Year 9 States of Matter Methods of Separating and Purifying Substances Atomic Structure
More informationOne mole of electrons carries a charge of 96500C or 1 Faraday Q=It One mole of any gas occupies 22.4dm 3 at standard temperature and pressure (s.t.p.
1 One mole of electrons carries a charge of 96500C or 1 Faraday Q=It One mole of any gas occupies 22.4dm 3 at standard temperature and pressure (s.t.p.) Standard temperature is 0 0 C or 273K and standard
More informationOrchard School. New Document 1 Name: Class: Date: 129 minutes. Time: 126 marks. Marks: Comments: Page 1
New Document Name: Class: Date: Time: Marks: 29 minutes 26 marks Comments: Page Q. The ph scale is a measure of the acidity or alkalinity of a solution. (a) Solution Draw one line from each solution to
More informationQueen s Park High School Key Stage 3 Assessment Science - Earth IA6 target.
Year 7 Enquiry Skills Queen s Park High School Key Stage 3 Assessment Science - Earth IA6 target. EARTH STRUCTURE AND UNIVERSE Draw simple graphs outlining information about planets Construct models of
More informationIB Chemistry Solutions Gasses and Energy
Solutions A solution is a homogeneous mixture it looks like one substance. An aqueous solution will be a clear mixture with only one visible phase. Be careful with the definitions of clear and colourless.
More informationQuestions Q1. Describe, in detail, how you would carry out this experiment. (6) ...
Questions Q1. * An experiment was carried out to compare the rates of reaction between calcium carbonate and two different concentrations of hydrochloric acid. Describe, in detail, how you would carry
More informationKenya Certificate of Secondary Education (K.C.S.E.)
Name: School:. Date:... 233/1 CHEMISTRY PAPER 1 JULY /AUGUST 2011 TIME: 2 HOURS Index No. Candidate s Sign.... Kenya Certificate of Secondary Education (K.C.S.E.) Chemistry Paper 1 INSTRUCTIONS TO THE
More informationSummary questions. C2.1 Structures and bonding. Total = /33 AQA Science Nelson Thornes Ltd 2006 C2 1 1
C2.1 Structures and bonding Date: Fill in the gaps in the following sentences to test your recall of the facts you have learned in this chapter. 1 a) The centre of an atom is called the.... b) In the centre
More informationWrite down everything that the word equation tells you about the reaction (Total 4 marks)
Q1. Here is a word equation for a chemical reaction. copper oxide + sulphuric acid copper sulphate + water Write down everything that the word equation tells you about the reaction.......... (Total 4 marks)
More informationUnit C1: Chemistry in our world Page 1 of 5
Unit C1: Chemistry in our world Page 1 of 5 Lesson Specification learning outcomes Edexcel 360 Science Specification match Edexcel 360 Science GCSE Science Students Book page reference Additional information
More information