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Diamond and Graphite - GemSelect
24/7/2008· Diamond and graphite are both crystalline forms of the element carbon. Based on this fact, one would think they would be similar in many ways. But in fact they are very different. This highlights some important facts about crystals. Both diamond and graphite have a
A copper wire is 1.4 mm in diameter and carries a current …
Answer to: A copper wire is 1.4 mm in diameter and carries a current of 20 A. What is the electric field strength inside this wire? By signing up,
Caridge International AS and A Level Chemistry …
Caridge International AS Level Chemistry colourless crystals with high melting and boiling points and it does not conduct electricity. Sand is largely silicon(IV)oxide. QUESTIONS 11 Explain the
Describe and explain the similarities and differences …
Describe and explain the similarities and differences between the structures of diamond and graphite. Diamond and graphite are both allotropes of carbon. This means they are both made up of carbon atoms arranged differently and exist in the same physical state.
Why Does Sodium Chloride Have a High Melting Point?
8/4/2020· Sodium chloride has a high melting point because of the strong electrostatic attraction between its positive and negative ions; this requires more heat energy to overcome. All ionic compounds have high melting points for this reason.
Why can sodium chloride conduct electricity in the …
In order to conduct electricity a substance must have charge particles, such as electrons and ions, that are free to move freely through it. In the solid state, ionic compounds such as sodium chloride have their ions fixed in position and therefore these ions cannot move so solid ionic compounds cannot conduct electricity.
09M.2.sl.TZ2.5b.iii: Explain why solid sodium chloride does not conduct electricity but molten sodium chloride does. 11M.1.sl.TZ1.13: Which particles are responsible for electrical conductivity in metals?
1 Bonding, Structure and the Properties of Matter Higher Revision …
Graphite – flat sheets, conducts electricity, each carbon atom forms 3 covalent bonds. Diamond – tetrahedral structure, each carbon atom forms 4 covalent bonds, does not conduct electricity. k Explain the differences and similarities between silicon dioxide and
What are the essential properties and uses of graphite
Graphite is a good conductor of heat and electricity. 4. Although graphite is a very stable allotrope of carbon but at a very high temperature it can be transformed into artificial diamond. ADVERTISEMENTS: 5. Chemically, graphite is slightly more reactive than 1.
Graphite | Minerals Eduion Coalition
Graphite is the only non-metal element that is a good conductor of electricity. Natural graphite is used mostly in what are called refractory appliions. Refractory appliions are those that involve extremely high heat and therefore demand materials that will not melt or …
1 AQA Chemistry Unit 4.2 - Bonding, Structure and the Properties …
Explain why it can conduct electricity and heat. The topic I understand the most in this unit is The topic I need to work on is a b c 2 is a single layer of graphite. Why is this material so strong? Where is this product used? What is this structure? How many
chemguide: CIE A level chemistry support: Learning …
Support for CIE A level Chemistry Learning outcome 4.3(a) This statement looks at the lattice structures of a nuer of solid crystals with various sorts of bonding. Before you go on, you should find and read the statement in your copy of the syllabus. The links
Silicon Facts for Kids - Element Si, Properties, Uses, Glass, …
The chemical element Silicon has a syol Si and atomic nuer 14. Silicon is a metalloid (or semimetal). This means it has some properties like a metal, for example, it looks like a metal and some like a non-metal, for example, it does not do conduct
name the non-metal which is a good conducter of …
18/5/2006· Graphite, which is an allotrope of carbon. Diamond is also made of carbon but cannot conduct electricity because of its different structure. 0 0 0 Log in to reply to the answers Post cipchisega 1 decade ago I have in face the Periodic Table, so: - carbon (C) in its
Electrical conductivity across period 3 | Creative Chemistry
Silicon Silicon has a giant covalent structure. It is a semiconductor, so it is not a good conductor or a good insulator. Phosphorus, sulfur, chlorine and argon The remaining elements in period 3 do not conduct electricity. They have no free electrons that can move
Explain why graphite can conduct electricity Explain why most covalent substances do not conduct electricity State the conditions under which an ionic substance will conduct electricity
Silicon and Germanium - HyperPhysics Concepts
Silicon atoms form covalent bonds and can crystallize into a regular lattice. The illustration below is a simplified sketch; the actual crystal structure of silicon is a diamond lattice. This crystal is called an intrinsic semiconductor and can conduct a small amount of current.
Graphene - A simple introduction - Explain that Sf
21/3/2020· An easy-to-understand explanation of what graphene is, how it''s made, and the sorts of things it might be used for in future. I f the 20th century was the age of plastics, the 21st century seems set to become the age of graphene —a recently discovered material made from honeyco sheets of carbon just one atom thick.
HIGHER TIER CHEMISTRY MINI-MOCK UNIT 2 [C2.1, C2.2&C2.3, …
(b) Explain, in terms of the giant structure above, why is it possible to bend a piece of metal. (2) (Total 4 marks) Q3. The diagram represents the structure of graphite. Use your knowledge and understanding of the structure of graphite to explain why graphite
Why is graphite a good conductor of electricity? | …
18/12/2010· Graphite and metals have free electrons to conduct electricity. Not all non-metals are semi-conductors actually, semi-conductors have to be MADE from non-metals. Certain elements, such as Germanium or Silicon, are not naturally semiconductors but can be made into semiconductors by melting them and adding very small amounts of other chemicals.
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Graphite is a good conductor of electricity because: 1 Verified Answer View Answer Though both diamond and graphite are purest forms of carbon only graphite can conduct electricity. Explain. 1 Verified Answer
Examples of Electrical, Thermal Conductors & Insulators
29/1/2019· Metals typically conduct both heat and electricity. Carbon conducts electricity as graphite , but insulates as diamond, so the form or allotrope of a material can be important. Examples of Electrical Conduct…
Compare diamond and graphite. Describe the structure, hardness and conductivity. Keywords: covalent, atoms, electricity, electrons, flat h i j Explain the differences and similarities between silicon dioxide and diamond. g Fe(OH) 2 FeO Fe 2 O 3 My main areas k
12.7: Types of Crystalline Solids- Molecular, Ionic, and …
Classes of Crystalline Solids Crystalline substances can be described by the types of particles in them and the types of chemical bonding that takes place between the particles. There are four types of crystals: (1) ionic, (2) metallic, (3) covalent network, and (4) molecular..
1.50 explain how the structures of diamond, graphite and C 60 fullerene influence their physical properties, including electrical conductivity and hardness 1.51 know that covalent compounds do not usually conduct electricity