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igcse question explain why the metal calcium factory

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Recycling in the chemical industry

2019-5-14 · The third, most commonly regarded by the public as recycling, is the discarded metal-based product itself (old scrap). Thus in manufacturing a car, each of the three sources of recyclable metal becomes available from the steel mill itself, from the factory making the cars and lastly when the car itself is eventually recycled.

Different Types of Industry - Geography Revision

Different types of industry. This topic looks at the four types of industry: primary, secondary, tertiary and quaternary, for GCSE Geography Revision.

Blast furnace - Wikipedia

2019-5-12 · A blast furnace is a type of metallurgical furnace used for smelting to produce industrial metals, generally pig iron, but also others such as lead or copper. Blast refers to the coustion air being "forced" or supplied above atmospheric pressure.[1] In a blast furnace, fuel (coke), ores, and flux (limestone) are continuously supplied through

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Testing & Analysis Food Services. Intertek is a leading provider of testing and analysis services to the global food industry. We can help you implement comprehensive food safety and quality strategies, and achieve compliance with local, national and international regulations.

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Biology. Explore the science of life by learning about the systems and structures that make up the organisms of our world. Science. Chemistry Biology Basics Cells What HeLa Cells Are and Why They Are Important. List. Learn About the 4 Types of Protein Structure. Article. Learn About Nucleic Acids and Their Function. Article.

GCSE CHEMISTRY - What is the Effect of Increasing …

2017-2-21 · surface area and therefore has the fastest reaction rate. This is why a alyst is often used in the form of a powder. In the reaction between calcium carbonate and dilute hydrochloric acid, calcium carbonate may be used in the form of marble chips. HCl + calcium carbonate calcium chloride + …

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Before I made these two dishes, I researched about Calcium and Vitamin D and found out why these were important in the body and what they helped prevent. This helped me gain more insight and helped me know how important they were. Value of Work and Working Men in of Mice and Men for Gcse and Igcse Explain why.

extraction of metals - introduction - chemguide

2019-5-17 · This page looks at the various factors which influence the choice of method for extracting metals from their ores, including reduction by carbon, reduction by a reactive metal (like sodium or magnesium), and by electrolysis. Details for the extraction of aluminium, copper, iron and titanium are

Electrochemical Cells - HyperPhysics Concepts

2016-11-9 · Voltaic Cells. An electrochemical cell which causes external electric current flow can be created using any two different metals since metals differ in their tendency to lose electrons. Zinc more readily loses electrons than copper, so placing zinc and copper metal in solutions of their salts can cause electrons to flow through an external wire which leads from the zinc to the copper.

Chemistry - Quora

2018-9-2 · Updated Dec 18, 2018 · Upvoted by Quora User, Degree level applied chemistry + 20yr experience in corrosion prevention and water treatment and . Purnima Borgohain, Master of Science, Chemistry, B Borooah College (2018) Some physicists have considered this question seriously. But why? One reason might be that if electrons have free will, it


2017-8-7 · Write down the name of the non-metal element which is a grey solid at room temperature. Explain why the nucleus of an atom has a positive charge. The river water is treated in the water purifiion factory. Suggest why the tap water the factory makes may still contain lead ions.

Why Factory waste often contains acid If it reaches a

Why Factory waste often contains acid If it reaches a river the acid will kill fish and other river life It is prevented by adding slaked lime to the waste Why? alternate of this question.

IGCSE Chemistry Glossary 2015 Flashcards | Quizlet

IGCSE Chemistry Glossary 2015. STUDY. PLAY. Acid. A substance that produces hydrogen ions (H+) when dissolved in water. A sour substance which can attack metal, clothing or skin. The chemical opposite of an alkali. When dissolved in water, its solution has a pH nuer less than 7. 3 or 4 mark question and answers should go beyond just

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A book is a set of sheets of paper, parchment, or similar materials that are fastened together to hinge at one side. A single sheet within a book is a leaf, and each side of a leaf is a page. Writing or images can be printed or drawn on a document''s pages. An electronic image that is formatted to resele a book on a computer screen, smartphone or e-reader device is known as an electronic book

GW Additional Science B Unit 1 H B721-02 v14.uk

2017-8-3 · Explain why arteries do not need valves. (ii) A group of scientists studied the effect of poisoning by the metal cadmium. They thought that the metal caused the ratio volume of nucleus to decrease. A factory manufactures copper oxide by heating copper carbonate.

copper extraction and purifiion - chemguide

2015-7-26 · The concentrated ore is heated strongly with silicon dioxide (silica), calcium carbonate and air or oxygen in a furnace or series of furnaces. The copper(II) ions in the chalcopyrite are reduced to copper(I) sulphide (which is reduced further to copper metal in the final stage).

Tests for ions - Edexcel - Revision 2 - GCSE Chemistry

2019-5-8 · the calcium hydroxide precipitate is unchanged; Question. A green precipitate forms when dilute sodium hydroxide solution is added to a solution containing a metal ion. Identify the metal …


Complete Chemistry for Caridge IGCSE ® Second Edition RoseMarie Gallagher Paul Ingram Oxford and Caridge leading eduion together Complete Chemistry for

MAY-Unit2-2011 - Exam Board Papers - Chemistry - A …

(a) (iv) State one risk in using hydrogen gas in metal extractions.. (1 mark) (08) WMP/Jun11/CHEM2. 9. 4 (b) Calcium is an expensive metal. It is extracted by the electrolysis of molten calcium chloride. (b) (i) State why calcium chloride must be molten for electrolysis to occur.

(PDF) Caridge igcse chemistry by bryan earl and …

Caridge igcse chemistry by bryan earl and doug wilford. Nguyen Duy. Download with Google Download with Facebook or download with email

MAY-Unit2-2012 - Exam Board Papers - Chemistry - A …

Time / s (2 marks) (02) WMP/Jun12/CHEM2. 3. 1 (c) Draw a curve on Figure 3 to show how the total volume of oxygen collected will change with time if the original experiment is repeated at a temperature higher than 298 K. You should assume that the gas is collected at a temperature of 298 K. Figure 3. Do not write outside the box

How to Make Sea Salt: 8 Steps (with Pictures) - wikiHow

2019-5-3 · How to Make Sea Salt. Making your own sea salt is an excellent way to bring the taste and smell of your favorite seashore into your kitchen. Salt straight from the ocean takes on the characteristics of its environment, making it possible

Question Leave Nuer Blank Higher Tier

2019-4-5 · This question is about the transition metal copper and some of its compounds. (a) Describe the structure of copper metal and explain why it is a good conductor of Explain why some countries manufacture ethanol in this way. This question is about the reactions of the metals calcium, iron and zinc. (a) Samples of each of the powdered

Blast furnace - Wikipedia

2019-5-12 · A blast furnace is a type of metallurgical furnace used for smelting to produce industrial metals, generally pig iron, but also others such as lead or copper. Blast refers to the coustion air being "forced" or supplied above atmospheric pressure.[1] In a blast furnace, fuel (coke), ores, and flux (limestone) are continuously supplied through

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GCSE Scheme of Work

2015-1-13 · Certifie in Chemistry (iGCSE) Scheme of Work Year 9 Feb 2012 The Reactivity Series and Extraction of Metals • Explain why steels are produced. Some students should also be able to: The Structure of metals – explain and draw a diagram - positive metal ions with a …

6th Grade Reading Lessons - edHelper

2017-8-2 · 6th Grade Reading Lessons: Weekly Sixth Grade Reading Books ) A Bright Idea (Grade 4-6 Readability) A Donkey and a Hare (Grade 5-7 Readability) A Forest Is a Food Factory (Grade 4-6 Readability) A Glimpse of an Integrated Life (Grade 4-6 Readability) A Horsey Puzzle (Grade 4-6 Readability) Why Waste? - A Change In Habits (Grade 4-6

Sample exam questions - Quantitative chemistry - …

2019-5-17 · Explain why 1 mol of aluminium sulfate has a nuer of ions that is five times greater than the nuer of atoms in 1 mol of aluminium metal. Include a chemical formula in your answer.

GCSE Chemistry Question and Answers 2015 - S-cool The

2015-6-3 · GCSE Chemistry Question and Answers 2015 . 2 Table of Contents Answer outline and marking scheme for question: 3 a) = calcium nitrate + carbon dioxide + water (1 mark) b) Write an equation to show how aluminium ions are changed in to aluminium metal. (2 marks) c) Why can''t the blast furnace be used to make aluminium? (1 mark) (Marks

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