Date: Class period Unit: Periodic Trends History and the Basics-WS#1 Across 3. Separates metals from nonmetals 6. How the Periodic Table was first arranged Made into wire 11. Where the alkaline earth metals are located 13. Nonmetal that is grouped with the metals 15. The metal that is grouped with the metalloids 17. What results when elements are arranged in order of increasing atomic number 18. Elements that both the s and p sublevels are completely filled 19. The elements in the s and p blocks 20. The name for the elements who have a configuration that end in s Down 2nd group, 4th period 2. Horizontal row 4. Inner transition metals 5. Group 17 7. First scientist given credit for organizing the Periodic Table 8. d block metals 10. The second scientist who arranged the Periodic Table according to atomic number 12. Vertical column 14. Brittle, dull, poor conductors 16. Has properties of both metals and nonmetals
The Correct Answer and Explanation is:
Across:
3. Separates metals from nonmetals – Staircase
6. How the Periodic Table was first arranged – Atomic Mass
11. Where the alkaline earth metals are located – Group 2
13. Nonmetal that is grouped with the metals – Hydrogen
15. The metal that is grouped with the metalloids – Aluminum
17. What results when elements are arranged in order of increasing atomic number – Periodic Pattern
18. Elements that both the s and p sublevels are completely filled – Noble Gases
19. The elements in the s and p blocks – Main Group Elements
20. The name for the elements who have a configuration that end in s – Alkali Metals
Down:
2. 2nd group, 4th period – Calcium (Ca)
4. Inner transition metals – Lanthanides
5. Group 17 – Halogens
7. First scientist given credit for organizing the Periodic Table – Mendeleev
8. d block metals – Transition Metals
10. The second scientist who arranged the Periodic Table according to atomic number – Moseley
12. Vertical column – Group
14. Brittle, dull, poor conductors – Nonmetals
16. Has properties of both metals and nonmetals – Metalloids
Explanation:
The periodic table is structured based on trends in the properties of elements. One important trend is the periodicity, where properties repeat in a predictable pattern when the elements are arranged by atomic number (as first organized by Moseley). The elements are grouped into blocks (s, p, d, and f blocks) that correspond to the sublevel in which their electrons are found.
- Metalloids exhibit properties of both metals and nonmetals and are located along the “staircase” on the periodic table.
- The alkaline earth metals (Group 2) are located in the second column and include elements like calcium and magnesium.
- Noble gases (Group 18) are unique because their electron configurations are full, making them stable and unreactive.
- The halogens (Group 17) are highly reactive nonmetals, and they are found in the second-to-last column of the periodic table.
- The transition metals (d-block) are located between Groups 3-12 and include metals such as iron and copper.
Overall, the periodic table helps to visualize relationships between elements based on their atomic number, electron configuration, and chemical properties, forming the basis for understanding chemical behavior.
