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History of the Periodic Table Flashcards | StudBud
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History of the Periodic Table
History of the Periodic Table
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10 questions on Newlands and Mendeleev's periodic table
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1
What was John Newlands' suggestion for making sense of the elements and their properties?
Measuring Atomic Weights
Law of Octaves
Triads
2
In Newlands' table, iron was put in the same group as oxygen and sulphur. Why is this strange?
Iron is magnetic but oxygen and sulphur are not
Iron is much heavier than oxygen and sulphur
Iron is a metal and the other two are non-metals
3
Why did Mendeleev's table gain popularity with chemists following its publication?
They didn't have the internet, so no-one knew about it
Mendeleev went on a world tour to publicise it
Elements he had predicted were discovered and fitted in
4
The modern periodic table is usually credited to Dmitri Mendeleev. What nationality was he?
Russian
German
British
5
Which element predicted by Mendeleev, was discovered a few years after he made his table?
Gallium
Carbon
Lead
6
In what decade did Newlands and Mendeleev start to make progress towards a periodic table?
1860s
1950s
1970s
7
What did Newlands' work and Mendeleev's work have in common?
They were both laughed at by other scientists
They both started by ordering elements by atomic weight
They both worked with a large group of colleagues
8
Mendeleev predicted eka-silicon, which group do think he left a gap in for this element?
Group 1
Group 4
Group 7
9
What was the significance of Mendeleev leaving gaps in his periodic table?
The elements had not yet been discovered
He wanted to leave some work for others to do when he died
He didn't know where to put some elements
10
Why did Mendeleev swap the order of some of the elements in his periodic table?
To put them in alphabetical order
To make sure the properties fitted elements in the group
To put them in order of increasing atomic weight
