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- 1. Multiple Choice
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
- 2. Open Ended
Explain how a metallic bond is similar to an ionic bond
- 3. Open Ended
Explain why gold can be used in jewelry and as a conductor in electronic devices
- 4. Multiple Choice
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
- 5. Multiple Choice
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
- 6. Fill in the Blank
Electrons involved in metallic bonding are reffered to as ________ electrons
- 7. Open Ended
All uncharged atoms have valence electrons. Explain why elements such as iodine and sulfur do not have metallic bonds
- 8. Multiple Choice
Using the periodic table only order calcium (Ca), potassium (K) and Aluminium (Al) from lowest to highest melting points
K Al Ca
K Ca Al
K Ca Al
- 9. Open Ended
Briefly explain why steel, an alloy of iron is used to build the supporting structure of many buildings
- 10. Open Ended
Why do copper and zinc form a substitutional alloy and not an interstitial alloy
- 11. Multiple Choice
Which property of metals is represented by the image ?
High boiling and melting points
Density
Ductility
Malleability
- 12. Multiple Choice
Which property of metals is represented by the image ?
Ductility
Malleability
Durability
- 13. Fill in the Blank
The ________________ model proposes that all metal atoms in a metallic bond contribute their valence electrons to the metallic lattice
- 14. Open Ended
A student is given the two metals shown in the diagram. The student is then asked to perform a simple test to identify which of the 2 metals is from group 1 and which is from group 12. What test do you think the student could perform to identify which metal is which ?
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