Relationship between atomic masses of groups of three elements in which the central element had atomic mass average of the other two elements.
Chem Test 9 (9th) 21-22

Quiz
•
Chemistry
•
1st - 12th Grade
•
Medium
Adrian Huaca
Used 1+ times
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11 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dobereiner's Triads
Mendeleev's Triads
Dalton's Triads
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Attempts were initiated to organized chemical elements
before the determination of correct atomic masses of elements by Cannizaro
after successful determination of correct atomic masses of elements by Cannizaro
none of the above
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Who put forward his observations in the form of "law of octaves" ?
Newlands
Dobereiner
Mendeleev
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Repetition in chemical properties every eight elements if arranged by increasing atomic masses.
Law of octaves
Octect Rule
Musical analogy theory
5.
OPEN ENDED QUESTION
2 mins • 1 pt
Explain the relationship between the Law of Octaves and the musical notes
Evaluate responses using AI:
OFF
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many elements did Mendeleev arrange at the time in order of increasing atomic masses ?
63 elements
92 elements
45 elements
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
According to Mendeleev
horizontal rows are called PERIODS and vertical columns are called GROUPS
horizontal rows are called GROUPS and vertical columns are called PERIODS
none of the above
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