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if you see this shout Ryan Briley Smells

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Yooo whats up add me up on snapchat: deivis5577

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little kids

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hi#

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im the rich kid when u see this shout ouch!!!

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im the rich kid when u see this shout ouch!!!

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why does it say meals shouldn't it be metals

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why does it say meals shouldn't it be metals

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Spend the rest of your time revising some of the key points of the topic so far.

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Science Ionic Covalent Metallic Bonds Flashcards | Quizlet

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Start studying Science Ionic Covalent Metallic Bonds. Learn vocabulary, terms, and more with flashcards, games, and other study tools.

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http://www.bbc.co.uk/bitesize/quiz/q70575375

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BBC Bitesize - GCSE Chemistry (Single Science) - Ionic compounds - AQA - Test

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Learn about and revise ionic compounds with this BBC Bitesize GCSE Chemistry (AQA) study guide.

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1. Define the term alloy.
2. Draw a diagram to describe the structure of an alloy.
3. Explain how an alloy affects the properties of a metal.

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Comparing properties of alloys and pure metals

Many pure metals are too soft for many uses. They can be made harder by adding another element to the pure metal, so forming an alloy. This explains why an alloy often has more uses than the pure elements it is made from.

Pure iron, for example, is very soft. Adding a small amount of tungsten to iron makes tool steel, which is harder than pure iron. are examples of alloys. There are many types of steel.

Explaining alloy hardness

In the solid state, a pure metal has a giant metallic structure . The atoms are arranged in layers. When a is applied, the layers may slide over each other. The greater the force needed, the harder and stronger the metal.

In a pure metal, the force needed to make the layers slide over each other is small. This explains why many pure metals are soft.

In an alloy, there are atoms of different sizes. The smaller or bigger atoms distort the layers of atoms in the pure metal. This means that a greater force is required for the layers to slide over each other. The alloy is harder and stronger than the pure metal.

Explain why steel, which is an alloy of iron, is harder than pure iron.

Steel contains atoms of other elements as well as iron. These atoms have different sizes to iron atoms, so they distort the layers of atoms in the pure iron. This means that a greater force is required for the layers to slide over each other in steel, so steel is harder than pure iron.

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Alloys - Metals and alloys - AQA - GCSE Combined Science Revision - AQA Trilogy - BBC Bitesize

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Many pure metals are too soft for many uses. They can be made harder by adding another element to the pure metal, so forming an alloy. This explains why an alloy often has more uses than the pure elements it is made from. Pure iron, for example, is very soft.

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1. Do meals have high or low melting and boiling points?
2. Explain your answer to the above question.
3. Do metals conduct electricity?
4. Explain your answer to the above question.
5. Are metals malleable?
6. Explain your answer to the question above.

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Bonding - OCR Gateway - Revision 6 - GCSE Combined Science - BBC Bitesize

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Learn about chemical bonds with Bitesize GCSE Combined Science (OCR Gateway).

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1. Describe the structure of metallic bonding
2. Draw and label a diagram of metallic bonding.
3. Define the term delocalised electrons

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BBC - GCSE Bitesize: Metallic bonding - higher

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A secondary school revision resource for AQA GCSE Additional Science about atomic structure and different substances and their properties