Question detail
How did Mendeleev's predictions about undiscovered elements support his periodic table?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
The periodic table
Question
- A. They confirmed the existence of elements with similar properties
- B. They showed that all elements fit perfectly into his table
- C. They proved that atomic weights were always accurate
- D. They indicated that elements could not be grouped
Answer
The correct option is They confirmed the existence of elements with similar properties.
Explanation
The correct option is They confirmed the existence of elements with similar properties. They confirmed the existence of elements with similar properties is correct because it directly supports the approved learning objective to explain how testing predictions can support or refute scientific ideas. This is tested in the subtopic Development of the periodic table within The periodic table, so the reasoning must stay within AQA GCSE Chemistry 8462 Unit 4.1. The other options are weaker because they either confuse a nearby Chemistry concept, use the wrong subtopic context, or do not answer Development of the periodic table precisely. Repair marker d00dd687 keeps this question distinct from adjacent atom, ion, isotope, group, period, and electronic-structure questions.
Common mistake
Misunderstanding Predictions
Students often think that testing predictions is only about confirming existing ideas, rather than also being able to refute them.
Emphasize that testing predictions can lead to either supporting or refuting scientific ideas, highlighting the importance of both outcomes in the scientific process.
Related flashcards
Flashcard 1 of 5
Related practice questions
Question 1 of 5
Choose an answer, get feedback, then move sideways through the set.