Why Is Metal Shiny Quizlet?

why are metals shiny?

when the metal atoms absorb light the electrons become excited and go to higher energy levels then immediately fall back down to lower levels which emits energy in the form of light

which makes them shiny.

Why is metal so reflective?

So metals are highly reflective, because:

most of the photons get elastically scattered

, that is reflection. lesser number of photons get inelastically scattered, these heat up the metal. very little number of photons get absorbed in the visible range, most of these get reflected and that gives metals a shiny color.

Why is metal shiny?

When a wave of light hits the metal, the sea of electrons absorb the energy from the light, which makes them vibrate at the atomic level. … So a metal’s shine

is really reflected light

, thanks to the special composition of the electrons.

Which reason best explains why metals are so shiny?

Explanation: It is known that

metals have free electrons

. These free electrons when come in contact with light, vibrate or oscillate at their respective position. As a result, the electrons gain small amount of energy and when this energy is released the surface of metal shines.

Are all metals shiny?

All metals have a shiny appearance

(at least when freshly polished); are good conductors of heat and electricity; form alloys with other metals; and have at least one basic oxide.

Why are metals shiny Why are metals shiny?

When a wave of light hits the metal, the sea of electrons absorb the energy from the light, which makes them vibrate at the atomic level. … So a metal’s shine is

really reflected light

, thanks to the special composition of the electrons.

Which has the greatest speed in a vacuum?

Not truly a constant, but rather the maximum speed in a vacuum,

the speed of light

, which is almost 300,000 kilometers per second, can be manipulated by changing media or with quantum interference.

Which metal reflects light the best?

A

polished silver surface

, for example, reflects about 93 percent of the incident visible light, which is very good as metals go. Interestingly, if the metal layer is very thin–only a few hundred atoms thick–then much of the light leaks through the metal and comes out the back.

Why are metals so hard?

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

.

Why does metal glow?

Metals actually emit light, although this does not mean metals glow in the dark (like a light bulb or the Sun). Instead,

metals absorb and re-emit photons, even at room temperature

. … When these electrons lose that energy by returning to the ground state, it is emitted as light.

How do electrons move in a metallic bond?

In metallic bonds,

the valence electrons from the s and p orbitals of the interacting metal atoms delocalize

. … The electrons then move freely throughout the space between the atomic nuclei.

Which best explains why metals are ductile instead of brittle?

Which reason best explains why metals are ductile instead of brittle? B.

Because they have flexible bonds

.

Which elements is likely to be the most brittle?

Being a non-metal,

selenium

is brittle in nature. Thus, we can conclude that selenium is likely to be the most brittle out of the given options.

Is metal shiny or dull?

What metal is shiny?

Many different kinds of metal are shiny.

Gold

is a metal which stays shiny for a long time because it does not react much chemically with the air. Silver is shinier, but tarnishes easily. Many other metals, like iron or steel, aluminum, and copper are also shiny.

Are metals dull?

Most elements are metals. They are typically shiny, good conductors of heat and electricity, have a high density, and only melt at high temperatures. …

Their surface is dull

and they are poor conductor of heat and electricity.