The Periodic Table Quiz
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5 questions, one answer each
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1. What is the main reason why Mendeleev's periodic table was more successful than Newlands' Law of Octaves?
- A. Mendeleev left gaps for undiscovered elements and reordered some elements based on chemical properties rather than strictly by atomic mass
- B. Mendeleev discovered more elements than Newlands and had access to better equipment
- C. Mendeleev arranged all elements in a simple linear sequence without any gaps
- D. Mendeleev only included metals in his periodic table to make it simpler
2. Which statement correctly describes the modern periodic table?
- A. Elements are arranged in order of increasing atomic mass from left to right
- B. Elements are arranged in order of increasing atomic (proton) number, and the table is divided into periods and groups
- C. Elements are arranged alphabetically to make them easier to find
- D. Elements are separated into two sections: one for metals and one for non-metals, with no particular order
3. Why do elements in the same group of the periodic table have similar chemical properties?
- A. They have the same number of protons in their nucleus
- B. They have the same number of outer electrons in their electron shells
- C. They have the same atomic mass
- D. They are all either metals or all non-metals
4. A student is asked to classify bromine, silicon, and aluminium according to their position in the periodic table. Which of the following statements is correct?
- A. Bromine and silicon are non-metals; aluminium is a metal
- B. All three elements are non-metals located on the right side of the periodic table
- C. Bromine is a non-metal; silicon and aluminium are both metals
- D. All three elements are metals located in the centre of the periodic table
5. Mendeleev predicted the properties of an undiscovered element that would fit into a gap in his periodic table. Which of the following best explains how this prediction was possible?
- A. Mendeleev could observe the properties by examining similar elements in adjacent groups and periods, because elements in the same group have similar properties
- B. Mendeleev guessed the properties based on the name of the gap in his table
- C. Mendeleev had already discovered all the elements but kept them secret
- D. Mendeleev used mathematical formulas to calculate the exact properties without needing to observe anything