Please review and study chapter 4. The test will be on Wednesday April 9 or Friday April 11.
Here are some additional things for you to know on your test:
- You need to know the characteristics and properties of metals, nonmeatals, and metalloids.
- alkaline-earth metal
- mixed groups
- electronegativity
- How did Mendeleev use his periodic table to predict future discoveries of unknown elements?
- What can we determine about all the elements in Period 3 of the periodic table?
- Refer to a periodic table. Would you expect fluorine or iodine to act more like a nonmetal? Explain.
- Refer to a periodic table. How many valence electrons do the elements sodium, sulfur, and argon each have?
- How does the atomic radius of elements change from left to right across the periodic table? Explain.
- Refer to a periodic table. Draw the electron dot notation for selenium.
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- Explain how the periodic table models the designed structure of atoms.
- On the basis of its position on the periodic table, what do we know about neon?
- From top to bottom down a column on the periodic table, what happens to the atomic radius of elements? What happens to their electronegativities? Are atomic radius and electronegativity connected? Explain.
- Scientists you need to know:
- Antoine Lavoisier -demonstrated that combustion requires the presence of oxygen
- Johann Döbereiner -first recognized groups of three elements with similar properties
- Dmitri Mendeleev -organized elements with similar characteristics in columns like the modern periodic table
- John Newlands -developed the law of octaves through arranging elements by atomic mass
- Henry Moseley -led to reorganizing the period table on the basis of atomic number
- Jacob Berzelius -used letters used to represent each element and superscripts to represent number of atoms
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