Practice Early Classifications Of Elements (5.2) - The Periodic Table

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9 questions

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6 sample questions

Question 1.
What is a triad in chemistry?
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Think about the number three.
Question 2.
What was the limitation of Dobereiner's method?
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Consider the number of elements he could group together.
3Question 3.
What defines a triad according to Dobereiner?
- Three elements with different properties
- Three elements with similar properties
- Four elements of varying properties
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Remember the grouping number is three.
4Question 4.
True or False: Newlands’ Law of Octaves applies to all known elements.
- True
- False
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Consider what elements it doesn’t work with.
Question 5.
Critique the effectiveness of early classifications like Dobereiner's Triads and Newlands’ Law compared to modern classifications.
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Consider modern classifications and their benefits.
Question 6.
Apply the principles of Newlands’ Law to predict properties of an unknown element that comes after potassium.
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Look for patterns in current groups.

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