
Triads in Element Classification
Interactive Video
•
Chemistry, Science
•
8th - 10th Grade
•
Practice Problem
•
Hard
Olivia Brooks
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main topic discussed in the video?
Classification of elements into triads
Periodic table
Chemical bonding
Atomic structure
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
According to Dobereiner's Law of Triads, how are elements arranged?
In a single line
In groups of three
In pairs
In groups of four
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the arithmetic mean of the atomic masses in a triad?
The product of the atomic masses of all elements
The difference between the highest and lowest atomic masses
The average of the atomic masses of the first and third elements
The sum of all atomic masses
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is an example of a triad?
Lithium, Sodium, Potassium
Hydrogen, Helium, Lithium
Iron, Copper, Zinc
Carbon, Nitrogen, Oxygen
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a key characteristic of elements within a triad?
They are in the same state of matter
They have the same atomic mass
They have similar chemical properties
They have different chemical properties
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following elements are part of a triad?
Chlorine, Bromine, Iodine
Nitrogen, Phosphorus, Arsenic
Fluorine, Chlorine, Bromine
Oxygen, Sulfur, Selenium
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What was the central element's atomic mass in a triad?
The sum of the atomic masses of the other two elements
The product of the atomic masses of the other two elements
The arithmetic mean of the atomic masses of the other two elements
The difference between the atomic masses of the other two elements
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