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What During oxidation-reduction reactions a material loses electrons to the oxidizer which has a positive charge. Which power source directs these lost electrons through an electronic device to give i?
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∙ 8y ago
A battery
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All reactions require activation energy?
No. Some reactions such as one material dissolving into another do not require a starting energy.
How many valance electrons does a semiconductor have?
It is not the number of valence electrons that an insulator has that is important. It is the way the valence electrons are "arranged" in the structure of the material that matters. If not all the valence electrons of a substance are "involved" in the structure of the material, then these electrons are said to be free electrons. They move about in the substance, and are free to contribute to electron flow. The metals are examples. In contrast with this, if all the electrons are bound up in a material, they are not free to support current flow, and the material is said to be an insulator. Said another way, if the valence electrons in a material are in a Fermi energy level that overlaps the conduction band for that material, the material is a conductor. In an insulator, the valence electrons are all in Fermi energy levels that are below the conduction band for that material, and it is an insulator. Applying a voltage to an insulator will not "lift" the valence electrons up into the conduction band to allow them to support current flow.
What type of material allows electrons to move freely?
Electrons move freely in a solid, as in a metal
What is the difference between stereoselective and stereoselactive reaction?
stereoselective reactions: choice of pathway leading to different stereoisomer from the same starting material. stereospecific reactions: the mechanism means that the stereochemistry of the product is determined by the steriochemistry of the starting material.
Why do materials with extra electrons often stick to a material with missing electrons?
The electrostatic force attracts the opposite charges.
How difficult is it for electrons to flow through a material?
Electrons 'jump' from one atom to another. The electron configuration of the atoms determine how easy it is for an electron to move from one atom to another, which is a factor in determining conductivity of the substance.Actually in atoms in the solid state, electrons occupy one of 2 quantum energy bands: the valence band or the conduction band. Valence band electrons are tightly bound to the atom, but conduction band electrons are not bound to the atom and can roam freely through the material.insulators have very few if any conduction band electrons and thus cannot conductconductors have so many conduction band electrons that they form what is called an electron gas that fills all of the material and can flow freely, there is no"'jumping' from one atom to another" at all
Why solid materials did not change their characteristic when you mixed to other solid material?
There are a few reactions wich happen between two solids. but the reason most reactions wont work between two solids is because the electrons aren't free enough to move.
Which reactions require oxygen as a raw material 1 light reactions only 2 dark reactions only 3 both light and dark reactions 4 niether light or dark reactions?
Neither, oxygen is a byproduct, not a reactant or "raw material."
What material keeps electrons from moving?
This is called an insulator material.
Electrons do not readily flow through what material?
The material that electrons do not readily flow through in the electrical trade is classed an an insulator.
How friction can be used to transfer electrons?
When two materials rub together, the loosely held electrons of one material move to the material with the more tightly held electrons.
What is the series of enzyme-controlled reactions that build complex material from simple material?
Anabolism
How many valence electrons does insulator have?
It is not the number of valence electrons that an insulator has that is important. It is the way the valence electrons are "arranged" in the structure of the material that matters. If not all the valence electrons of a substance are "involved" in the structure of the material, then these electrons are said to be free electrons. They move about in the substance, and are free to contribute to electron flow. The metals are examples. In contrast with this, if all the electrons are bound up in a material, they are not free to support current flow, and the material is said to be an insulator. Said another way, if the valence electrons in a material are in a Fermi energy level that overlaps the conduction band for that material, the material is a conductor. In an insulator, the valence electrons are all in Fermi energy levels that are below the conduction band for that material, and it is an insulator. Applying a voltage to an insulator will not "lift" the valence electrons up into the conduction band to allow them to support current flow.
What principle can be applied to all chemical reactions?
material reacts in the presence of another material
Why silicon is used in zener diode?
silicon is used in (almost) every electronic device. silicon has four valence electrons. Molecules tend to want four valence electrons, so elements with three valence electrons (P-type material) want to steal one from other elements, and elements with five valence electrons (N-type material) want to give one away. P-type and N-type materials are mixed in electronic circuits to create transistors, diodes, etc. Silicon is used as an unbiased foundation for layering these N-type and P-type materials to create circuits.
What is the rubbing force that strips electrons or a material and makes it charged?
The rubbing force that strips electrons or a material and makes it charged is friction!i
What is the ability of a material to oppose the movement of electrons through it?
A material that has a high resistance to the flow of electrons is an insulator.
