Metallic Properties

Which pair of characteristics is most closely associated with metallic solids?

I. low melting point

II. high malleability

III. low thermal conductivity

IV. high electrical conductivity

• I and II

• I and III

• II and III

• II and IV

• III and IV

Explain how a metallic bond is similar to an ionic bond

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NGSS.HS-PS1-3

Explain why gold can be used in jewelry and as a conductor in electronic devices

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Select all correct statements

• Metals often form lattices in the solid state

• Metals cannot exist in the liquid state

• It is difficult to introduce other elements into the metallic crystal

• Alloys have properties that differ from the properties of the elements from which they were made

• All metals are malleable

The image shows :

• A substitutional alloy since the yellow atoms replaced the empty space between the blue atoms

• An interstitial alloy since the yellow atoms are the same size as the blue atoms

• A interstitial alloy since the yellow atoms filled the empty space between the blue atoms

Electrons involved in metallic bonding are reffered to as ________ electrons

All uncharged atoms have valence electrons. Explain why elements such as iodine and sulfur do not have metallic bonds

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NGSS.HS-PS1-1

Using the periodic table only order calcium (Ca), potassium (K) and Aluminium (Al) from lowest to highest melting points

• K $<$ Ca $<$ Al

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NGSS.HS-PS1-1

Briefly explain why steel, an alloy of iron is used to build the supporting structure of many buildings

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NGSS.HS-PS1-1

Why do copper and zinc form a substitutional alloy and not an interstitial alloy

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