8/15/2019 Material Science Review Questions 1 L1 L2

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VU21218 Material Science: Review Questions # 1.

Due: 17 March 2016, no late submissions accepted.

10 % of total assessment.

a!e: Stu"ent u!er:

Q1. Dene the following:

a. Electron. (2 ar!s"

b. #roton. (2 ar!s"

c. $eutron. (2 ar!s"

d. $ucleus. (2 ar!s"

e. tomic mass. (2 ar!s"

f. tomic number. (2 ar!s"

1

Question Mar$s

allocate"

Mar$s otaine"

1 1&

2 '

)

' '

* '

+ '

& '

)

10 &

11 +

12 *

1

1' &

%otal 8&

8/15/2019 Material Science Review Questions 1 L1 L2

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g. -sotope. (2 ar!s"

h. -on. (2 ar!s"

i. alence electrons. (2 ar!s"

Q2. /hat is the basis of the #eriodic able (' ar!s"

Q&. Describe and eplain the di3erences between the following forms ofatomic bonds:

a. -onic. ( ar!s"

b. 4o5alent. ( ar!s"

c. etallic. ( ar!s"

Q'. /hat is the melting point of the following metals

a. ercur6. (1 ar!s"

b. 7old. (1 ar!s"

c. -ron. (1 ar!s"

d. ungsten. (1 ar!s"

Q(. /hat is corrosion (' ar!s"

Q6. 8ist and dene the main t6pes of corrosion (' ar!s"

Q7. 9ow does the 5olume of oidation la6er or corrosion product 5ar6 withtime as temperature increases

( ar!s"

Q8. /hat is passi5ation (' ar!s"

Q). 4hemicall6, how is a metal oide formed ( ar!s"

Q10. 8ist and describe each of the !e6 elements reuired for wet corrosion (&ar!s"

Q11. ;sing Electrode #otential calculations show wh6 7old does not corrode inwater and 6 eplain stress corrosion ( ar!s"

Q1'. 8ist and brie>6 describe corrosion protection methods (&

ar!s"

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