History of the Periodic Table (AQA GCSE Chemistry Combined Science): Quizzes
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10 questions from this quiz
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Practise the questions
10 questions from this quiz
Which scientist grouped elements into 'triads' in the early 19th century?
Which scientist grouped elements into 'triads' in the early 19th century?
Johann Döbereiner
What were 'triads' in early element classification?
What were 'triads' in early element classification?
Groups of 3 elements with similar properties
Who created the first widely recognised version of the Periodic Table?
Who created the first widely recognised version of the Periodic Table?
Dmitri Mendeleev
In what year did Mendeleev create his version of the Periodic Table?
In what year did Mendeleev create his version of the Periodic Table?
1869
How did Mendeleev arrange elements in his Periodic Table?
How did Mendeleev arrange elements in his Periodic Table?
By increasing atomic mass
Why did Mendeleev leave gaps in his Periodic Table?
Why did Mendeleev leave gaps in his Periodic Table?
For elements not yet discovered
What did Mendeleev predict with remarkable accuracy?
What did Mendeleev predict with remarkable accuracy?
Properties of undiscovered elements
How are elements arranged in the modern Periodic Table?
How are elements arranged in the modern Periodic Table?
By increasing atomic number
What does the atomic number represent?
What does the atomic number represent?
The number of protons
What did arranging by atomic number resolve?
What did arranging by atomic number resolve?
Inconsistencies from atomic mass arrangement