Explain why metals are good conductors of electricity giving one example of a metal which uses this property. Metals are good conductors of electricity because they the metals are held together by bonds. These bonds are very strong because the most outer electrons of the atom belong to a foggy or cloud called delocalized electrons (Not bound to any specific atom), which allows them to move around to different atoms. When they travel they are able to travel through positively charged ions called lattice.
Copper:When copper rod is attached to a battery the delocalized electrons moverandomly but at a higher frequency allowing the electricity to be transferredthrough the metal rod, allowing for conductivity. Explain why metals are good conductors of heat giving one example of a metal which uses this property.Thisis the same as electrical conductivity but except when heat is applied to themetal, like any other structure the atoms start to move faster and vibrate,bumping into more ions in the metal more frequently. Because the delocalizedelectrons are not bound to any specific atom they are able to do this fasterand they vibrate even more allowing for higher kinetic energy, thereforeconducting more electricity that other substances. For example steel is a goodconductor of heat that can be used in heaters or hot water tanks, because itsproperties and the delocalized electrons they are able to pass the energythrough more quickly.
Explain why many metals are strong giving one example of a metal which has this property. The strength of a metal is defined by how much force is needed to deform it. This means that metals take more force to deform them. In order to deform them heat is applied to make them more malleable. For example metal alloys are much more stronger than metals because they are formed with other metals to make them.
For example steel is one of these metals. If on the other hand the elemental metal (normal) is composed by the same atoms they are able to be compacted tighter and slide over each other easily allowing fore more softness or malleability. Explain why metals are shiny giving an example of a metal which uses this property.Theyare shiny because there are a lot of delocalized electrons allowing for a lotof movement in a metal.
Because the negatively charged cloud of electrons isunder the smooth metal surface it allows for a consistent background behind thepositively charged atoms. This then forms a plasma in-between the two charges.When light is applied this plasma is then absorbed by the excited electron andit releases a photon with the same wavelength which it has absorbed. This thenmeans that the photon is bounced off the surface of the surface of the metaland therefore reflects it making it shiny and lusters. A metal like this isaluminum.
Explain why metals are generally solid (except for mercury). Metals are ionic compounds meaning that they have high melting and boiling points. When a metal and a non-metal are combined they make an ionic compounds, which is when an ion merges with another ion. This then means that a cation and anion present because there needs to be an opposite ion, in order for them to attract one another. Therefore the pull between the anion and cation are very strong and therefore the structure of the metal is very dense, and requires a large amount of energy to separate the ions. A metal like this is titatium have a large number positive ions (+) in the sea a lot of delocalized electrons (-) and therefore are very strong to break, therefore causing it to be hard to break. Explain why metals are malleable and ductile giving examples of why this is a useful property to have.
Malleable means that metals can be made into large sheets and ductile means that they can be made into wiring that can be made into cable work for household items such as toaster wiring. This can be allowed because the metals can be on top of each other and scrunched up without breaking their bonds, allowing them to stay the same element. If the metal is able to undergo small pressure and the retain to its original form it can be labeled elastic. If it stays in a formed position is a large amount of pressure the shape is permanently changed. Because the delocalized electrons can move around easily the atoms can be arranged and manipulated allowing it to retain the newly formed shape because it allows the electron cloud from moving back around the moved atoms. Silver and copper are used for wiring in electrical forms becausethey are ductile. This is a useful property to have because this means thatthey can conduct electricity and can be adjusted to their usage by changingthey shape.
Aluminum is a metal that is malleable, and can be found inhouseholds such as aluminum wrap, to wrap foods in. This metal can be beateninto very thin sheets for easier wrapping.