What Reason Best Explains Why Metals Are Shiny Its 16 hexagon mirrors, arranged like a honeycomb, are made from beryllium, a rare metal. Unit cells that allow planes of atoms to slip past each other in more directions, such as face-centered cubic (i.e., copper, silver, or gold), are far more ductile than those with hexagonal close-packed structure (i.e., cobalt or titanium). Experiment: Keep your candy cool with the power of evaporation! By adjusting their chemistry, by adding a little bit to them or taking something away, by controlling their heat treatment, their temperatures, and the rates that they are heated and cooled, you have a lot of control over their properties. B C D It's really only what you Metallic Bonding [1] In the early 1900's, Paul Drde came up with the "sea of electrons" metallic bonding theory by modeling metals as a mixture of atomic cores (atomic cores = positive nuclei + inner shell of electrons) and valence electrons. In the case of the more complex metals (i.e., the transition elements), conductivities are better explained by the band theory, which takes into account not only the presence of free electrons but also their interaction with so-called d electrons. Although more than three-fourths of the 118 elements on the periodic table are metals, we craft tools from only a few of these. Answer: Best: because their valence electrons absorb light Minor: because their valence electrons move to higher energy levels Explanation: When the electrons absorb light, they absorb this energy and they have a tedency to jump and get promoted to the high energy level. Elements with high metallic character lose electrons most easily. As the electron again drops back to lower energy level, it emits energy in the form of photons. The people who carried these were supposed to have personal characteristics and attitudes that were perhaps different from what an ordinary soldier might have when he carried a spear or something of that nature. (1 pt), calculate the volume of oxygen gas used during the burning. A(X) They move and shake. This oscillation causes the electrons to produce their own light which is reflected back causing the appearance of what we would called luster. Created in 1958, this U.S. agency has become a leader in space research and in stimulating public interest in space exploration. A towering skyscraper bends under a strong gust of wind, but it doesnt snap. In many ways, however, this weakness turns out to be metals strength. It's not going to peer shiny in the sense that in the sense of metals appearing shiny, here. If let's say right over here, Metals are primarily shiny, hard solids that are good conductors of heat and electricity. The Titanics steel alloy became brittle at 32 C (90 F). ionized) An atom or molecule with an electric charge due to the loss or gain of one or more electrons. which reason best explains why metals are shiny? A(X) B metal, any of a class of substances characterized by high electrical and thermal conductivity as well as by malleability, ductility, and high reflectivity of light. And as metals get cold, this problem only worsens. A theory can also be a way of organizing a broad body of knowledge that applies in a broad range of circumstances to explain what will happen. Thats one advantage metals can offer. Such mixed metals are called alloys. A thin layer of gold covers the beryllium to improve the mirrors reflectivity. Your email address will not be published. How does the band theory for metals explain this characteristic? Among these nonmetals are carbon, oxygen and nitrogen. Its a hard gray metal in the transition series. and their solutions are observed to (X) Metals are malleable, meaning that they can be formed into other shapes, such as thin sheets or foils, without breaking or cracking. The most reactive include lithium, potassium, and radium, whereas those of low reactivity are gold, silver, palladium, and platinum. Hydrogen is the only nonmetal that is not grouped with the nonmetals. Metallic character exists on a spectrum. You already know some technical basics about metals. metallic character: A term that describes the reactivity of metals due to their tendency to give up electrons in chemical reactions. sodium: A soft, silvery metallic element that will interact explosively when added to water. Explanation: We know that metals have free electrons. They are shiny, malleable, fusible, ductile, good conductors of electricity and heat, and inclined to give up electrons to form cations. Which reason best explains why metals are shiny? Metals Versus Nonmetals - Comparing Properties, Metallic Character: Properties and Trends. So, it's a good idea to know what metals are and a few things about them. (v.) To perform these tasks, or the name for a person who performs such tasks. metals or metallic solids that allow them to be lustrous in this way and have other properties The result is we build up the strength. Take iron, for instance. Why Are Metals Shiny? When light falls on the metal surface, the photons of light are absorbed by the free electrons and these electrons move from one energy level to higher energy level. 2 Al + 3 Br2 --> 2 AIBr3 I hope this helps. Metallic solids also tend to be malleable and ductile due to the ability of the metal nuclei to move past each other without disrupting the bonding. It is a little bit like being in a kitchen and adjusting the recipe by adding a pinch of salt, or maybe saying, "This could really use just a hint of lemon," and somehow that little bit really changes the taste of the food. O atoms and molecules O anything that takes up space O elements O protons and neutrons. 27 True-or-False Questions from Britannicas Most Difficult Science Quizzes, This article was most recently revised and updated by. If you get a crack in the outer part of the glass, it will go through that layer and hit the plastic, which is tough, and the crack will stop. (2 pts) this positive charge in this sea of electrons, what are you think of the properties? Direct link to Eduardo Fasano's post Disclaimer - technical qu, Posted 2 years ago. This process is known as reflection, and it is what gives metals their characteristic shine. give one electron to that sea because it doesn't really But the Statue of Liberty is a 46-meter (151 ft.) iron frame covered with a layer of copper that is 2.3 mm thick. Exactly. Describe why other metals are added to silver and gold. If I made the back-of-the-striking-face part of the hammer very, very hard, it would also not have very much toughness. Well, if you start with iron and then add a little bit of carbon, you get steel. Chemistry High School answered expert verified Which reason best explains why metals are shiny? Because of this characteristic, metals tend not to form compounds with each other. Substance B What reason best explains why metals are shiny - Brainly.com What is the differencea crucial one, it turns outbetween hardness and toughness in metal? Now what would be, we Facts You Should Know: The Periodic Table Quiz, https://www.britannica.com/science/metal-chemistry, Science Kids - Fun Science and Technology for Kids - Metal Fact, Chemistry LibreTexts - Introduction to Metals, metal - Children's Encyclopedia (Ages 8-11), metal - Student Encyclopedia (Ages 11 and up). A. For example, compounds made with vanadium can be purplish (+2), greenish (+3), bluish (+4), and yellowish (+5) depending upon the particular oxidation state of vanadium. It was also used as jewelry and capped the Washington Monument. benzene Which molecule has a structure that is most like aspirin? because their valence electrons reflect light/ because their valence electrons absorb light/ because their valence electrons oscillate between bands/ because their valence electrons move to higher energy levels. unit 3 test review Flashcards | Quizlet Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree. Interesting Metal Facts and Properties - ThoughtCo Napoleon III served state dinners featuring aluminum plates and cutlery. (X) You can specify conditions of storing and accessing cookies in your browser, Valence electrons oscillate between bands(c), Which reason best explains why metals are shiny? How Long Would It Take To Fly Around The World? Its an integral part of many fuels, fats and chemicals that make up living tissues. contribute two valence electrons to a sea of electrons. You have those cations Low-reactivity metals are safer to handle than high-reactivity ones. For example, silver can be mined as pure silver. Later, it was used as ingredients (fluorocarbons) in refrigerants and aerosol propellants. They write new content and verify and edit content received from contributors. Just because metals are really flexible doesnt mean they arent reactive. As a result, the electrons gain small amount of energy and when this energy is released the surface of metal shines. They too can be ionized or These free electrons when come in contact with light, vibrate or oscillate at their respective position. metalloids: Also known as semimetals. Well, consider the common hammer. After all, electricity is just the movement of electrons. It is an important part of coal, limestone and petroleum, and is capable of self-bonding, chemically, to form an enormous number of chemically, biologically and commercially important molecules. data, which substance reacted Neither really wants the electrons badly enough. Which reason best explains why metals are shiny? D. Substance C, Aluminum bromide can be prepared by the reaction of aluminum metal with bromine gas shown by the equation: also be good at conducting thermal energy or heat. Which reason best explains why metals are shiny? 14 which reason best explains why metals are shiny? Advanced Guide Metals are shiny because of the light re-emitted (or reflected) by the vibrations of free electrons present on the surface of the metals. This shiny appearance of the metal surface is known as luster.