Chem Test 9 (9th) 21-22

Chem Test 9 (9th) 21-22

1st - 12th Grade

11 Qs

quiz-placeholder

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Chem Test 9 (9th) 21-22

Chem Test 9 (9th) 21-22

Assessment

Quiz

Chemistry

1st - 12th Grade

Medium

Created by

Adrian Huaca

Used 1+ times

FREE Resource

11 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Relationship between atomic masses of groups of three elements in which the central element had atomic mass average of the other two elements.

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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