extraction de cuivre bbc bitesize.

Elements, compounds and mixtures

compound A pure substance made from two or more elements which are chemically bonded in a fixed ratio. and. mixtures. close. mixture When two or more compounds or elements are present without ...

Extracting Metals | Teaching Resources

Extracting Metals | Teaching Resources. Subject: Chemistry. Age range: 14-16. Resource type: Lesson (complete) File previews. pptx, 3.78 . Using carbon to …

Atoms and molecules

atom The smallest particle of an element. We often think of atoms as tiny spheres, but in fact they are made from smaller particles called protons, neutrons and electrons. are the building blocks ...

Rock types

igneous. metamorphic. sedimentary. Look through the slideshow to find out more about the three rock types. Image caption, 1. Igneous rocks. Igneous rocks are formed from the cooling of molten rock ...

GCSE Design and Technology

Exam board content from BBC Bitesize for students in England and Northern Ireland. Choose the exam specification that matches the one you study.

GCSE Chemistry (Single Science)

GCSE Chemistry (Single Science) Chemistry is the study of the composition, behaviour and properties of matter, and of the elements of the Earth and its atmosphere. Part of Science.

Renewable and non-renewable energy sources Types of energy resource

A non-renewable energy resource is one with a finite close finite Something that has a limited number of uses before it is depleted. For example, oil is a finite resource. amount. It will ...

Acids, alkalis and salts

GCSE; AQA; Acids, alkalis and salts - AQA Acidic and alkaline solutions. Indicators are used to determine whether a solution is acidic or alkaline. Acids react with metals, bases and carbonates to ...

Home

Use BBC Bitesize to help with your homework, revision and learning from KS1 to GCSE. Find free videos, step-by-step guides, activities and quizzes.

Chemical changes

Chemical changes. The reactivity series shows metals in order of reactivity. The reactivity of a metal is related to its tendency to form positive ions. Iron and aluminium are extracted from their ...

Electrolysis and extraction of aluminium

Learn about electrolysis and extraction of aluminium with BBC Bitesize GCSE Chemistry (WJEC).

Electrolysis and extraction of aluminium Extracting aluminium

The use of molten cryolite as a solvent close solvent The liquid in which the solute dissolves to form a solution. reduces some of the energy costs involved in extracting aluminium by allowing the ...

GCSE

GCSE is the qualification taken by 15 and 16 year olds to mark their graduation from the Key Stage 4 phase of secondary education in England, Northern Ireland and Wales.

Play the Atomic Labs Science Game

Get hands-on with KS3 science investigations in Atomic Labs. Experiment and put your science skills to the test using Bunsen burners, test tubes and much more.

Obtaining and using metals

The extraction close extraction The process of obtaining a metal from a mineral, usually by reduction or electrolysis. method used depends upon the metal's position in the reactivity series close ...

Blood and Circulation

Pulmonary circuit. Pulmonary circulation takes place between the heart and the lungs. The pulmonary circuit transports blood to the lungs. The blood is oxygenated there and then carried back to ...

BBC Bitesize Chemistry Episode 7 Extracting metals using …

The uses of aluminium are hugely important in our world today and so the process of extracting it from its ore bauxite is vital. But as with any process in chemistry, it has its …

6.1.1 Extracting Metals

The position of the metal on the reactivity series determines the method of extraction; Metals placed above carbon are extracted using electrolysis; Lower placed metals can …

Electrolytes and electrolysis Electrolysis

Learn about and revise electrolysis with this BBC Bitesize GCSE Chemistry (OCR 21C) study guide.

Biological methods of metal extraction

plants are grown on a low-grade ore close ore A rock containing enough quantities of a mineral for extraction to be possible. that contains lower amounts of metal; the plants absorb metal ions ...

Oxidation, reduction and displacement reactions

Learn about and revise reactions of metals with this BBC Bitesize GCSE Combined Science (AQA) study guide

Chemical changes

This interactive quiz is for GCSE Chemistry (single science) students studying the reactions of metals. Test your knowledge of the reactivity series and the extraction of metals. Acids, alkalis ...

Nutrition, digestion and excretion

Proteins are a vital part of a healthy diet. Protein-rich foods include fish, meat, eggs and beans. Dietary fibre. Dietary fibre is plant material that cannot be digested by the human body ...

4.1.3 Extraction of Metals & Reduction

Extraction of metals and the reactivity series. The most reactive metals are at the top of the series. The tendency to become oxidised is thus linked to how reactive a metal is and …

GCSE Chemistry (Single Science)

Easy-to-understand homework and revision materials for your GCSE Chemistry (Single Science) WJEC (A* to G) studies and exams

What is a displacement reaction?

than copper. When a piece of magnesium is dipped into blue copper sulfate solution, a displacement reaction occurs. The magnesium displaces the copper, and the products are copper and a solution ...

4.1.4 Bioleaching & Phytomining

Bioleaching & Phytomining. Extraction of metal ores from the ground is only economically viable when the ore contains sufficiently high proportions of the useful metal, such as …

Electrolysis and extraction of aluminium Ionic half equations

Learn about electrolysis and extraction of aluminium with BBC Bitesize GCSE Chemistry (WJEC).

Improving processes and products

Learn about improving processes and products including metals, with Bitesize GCSE Combined Science (OCR Gateway).

Biological methods of metal extraction

GCSE; OCR Gateway; Improving processes and products - OCR Gateway Biological methods of metal extraction - Higher. Most metals are extracted from ores. Iron and aluminium are extracted in ...

Reproduction, the genome and gene expression

GCSE; AQA; Reproduction, the genome and gene expression - AQA DNA. Reproduction occurs in all organisms. DNA is important, as it allows new proteins to be synthesised.

Sample exam questions

Get ready for your exams with this BBC Bitesize GCSE Chemistry extracting metals and equilibria (Edexcel) exam preparation guide.

Resources from the Earth guide for KS3 chemistry students

1. Finite resources. Slate is often seen on the roofs of buildings. Lots of the resources that humans use are finite. This means their supply is limited and they will eventually run out. For ...

Threats to the tropical rainforest

Learn about and revise tropical rainforests, their characteristics and the threats they face, with GCSE Bitesize Geography (AQA).

2.5.2 Extracting Metals

Higher placed metals (above carbon) have to be extracted using electrolysis as they are too reactive and cannot be reduced by carbon. Lower placed metals can be extracted by …

GCSE Biology (Single Science)

Easy-to-understand homework and revision materials for your GCSE Biology (Single Science) CCEA '9-1' studies and exams

GCSE Physical Education

GCSE Physical Education. Exam board content from BBC Bitesize for students in England, Northern Ireland or Wales. Choose the exam specification that matches the one you study. Part of Learn & revise.

Organic chemistry

Cracking is used to convert long alkanes into shorter, more useful hydrocarbons. Understanding how to approach exam questions helps to boost exam performance. Question types will include multiple ...

Extraction of Metals and Reduction | GCSE Chemistry Revision

Extraction of Metals and Reduction. How metals are extracted depends on their position in the reactivity series. The table below shows the reactivity series of …

Electrolysis of solutions

Learn about and revise electrolysis with this BBC Bitesize GCSE Combined Science (Edexcel) study guide.

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