3/15/20, 6*44 PM
Lesson 7 Quiz
Lesson 7 Quiz
Due Mar 16 at 11:59pm Points 20 Questions 20
Available until Mar 16 at 11:59pm Time Limit None
Instructions
On web pages for lesson 7, pp 177-215 (Chapters 9 and 10) in Materials for Today's World ebook,
and lesson video.
Attempt History
Attempt Time Score
LATEST Attempt 1 38 minutes 20 out of 20
Score for this quiz: 20 out of 20
Submitted Mar 15 at 6:44pm
This attempt took 38 minutes.
Question 1 pts
According to the course reading, silica...
has to be made pure to lower the melting temperature into the range
possible with charcoal.
Correct!
needs an impurity added to it to lower its melting temperature.
https://psu.instructure.com/courses/2050595/quizzes/3778040 Page 1 of
14
, 3/15/20, 6*44 PM
Lesson 7 Quiz
has its melting temperature reduced when you increase the bond length.
in its pure form is not orderly.
Question 2 pts
The magnitude of the electrical charge on each of the component ions,
and the relative sizes of the cations and anions, are the two
characteristics of the component ions in crystalline ceramic materials
which influence their crystal structure.
True
Correct!
False
Question 3 pts
In ceramics, cations are positively charged metallic ions.
Correct! True
False
https://psu.instructure.com/courses/2050595/quizzes/3778040 Page 2 of
14
Lesson 7 Quiz
Lesson 7 Quiz
Due Mar 16 at 11:59pm Points 20 Questions 20
Available until Mar 16 at 11:59pm Time Limit None
Instructions
On web pages for lesson 7, pp 177-215 (Chapters 9 and 10) in Materials for Today's World ebook,
and lesson video.
Attempt History
Attempt Time Score
LATEST Attempt 1 38 minutes 20 out of 20
Score for this quiz: 20 out of 20
Submitted Mar 15 at 6:44pm
This attempt took 38 minutes.
Question 1 pts
According to the course reading, silica...
has to be made pure to lower the melting temperature into the range
possible with charcoal.
Correct!
needs an impurity added to it to lower its melting temperature.
https://psu.instructure.com/courses/2050595/quizzes/3778040 Page 1 of
14
, 3/15/20, 6*44 PM
Lesson 7 Quiz
has its melting temperature reduced when you increase the bond length.
in its pure form is not orderly.
Question 2 pts
The magnitude of the electrical charge on each of the component ions,
and the relative sizes of the cations and anions, are the two
characteristics of the component ions in crystalline ceramic materials
which influence their crystal structure.
True
Correct!
False
Question 3 pts
In ceramics, cations are positively charged metallic ions.
Correct! True
False
https://psu.instructure.com/courses/2050595/quizzes/3778040 Page 2 of
14
