Relative Atomic Mass and the Periodic Table Quiz
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5 questions, one answer each
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1. What is the key difference between Newlands' approach to classifying elements and Mendeleev's approach?
- A. Newlands arranged elements by atomic mass in strict order, whilst Mendeleev left gaps for undiscovered elements and reordered elements where necessary
- B. Newlands used the periodic table, whilst Mendeleev used the law of octaves
- C. Newlands discovered more elements than Mendeleev
- D. Newlands organised elements into groups, whilst Mendeleev organised them into periods
2. Why was Mendeleev's periodic table more successful than Newlands' law of octaves?
- A. It had more elements listed
- B. It predicted the properties of undiscovered elements and allowed for gaps and reordering based on chemical properties
- C. It was arranged by atomic number instead of atomic mass
- D. It separated metals and non-metals into different tables
3. The modern periodic table is arranged in order of increasing atomic number. What does this tell us about the structure of atoms?
- A. Elements with higher atomic numbers have more neutrons
- B. Elements with higher atomic numbers have more protons
- C. The number of electrons decreases as atomic number increases
- D. Atomic mass is always equal to atomic number
4. Elements in Group 17 of the periodic table all have similar chemical properties. What do these elements have in common?
- A. They all have the same number of protons
- B. They all have the same number of outer electrons
- C. They all have the same total number of electrons
- D. They all have the same number of neutrons
5. In the modern periodic table, metals are predominantly found on the left and centre of the table, whilst non-metals are found on the right. A student has an element with atomic number 17. Based on its position in the periodic table, would you expect it to be a metal or a non-metal, and why?
- A. Metal, because it has an atomic number in the middle range
- B. Non-metal, because atomic number 17 corresponds to Group 17, which is on the right side of the periodic table where non-metals are located
- C. Metal, because non-metals only have very high atomic numbers
- D. Non-metal, because all elements with atomic numbers above 10 are non-metals