Grade 9 Science: Periodic Trends
Explore the fundamental periodic trends of elements, including atomic radius, ionization energy, and electronegativity, with this comprehensive worksheet.
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Periodic Trends Worksheet
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Read each question carefully and answer to the best of your ability. Refer to your knowledge of periodic trends.
1. Which of the following elements has the largest atomic radius?
Lithium (Li)
Fluorine (F)
Sodium (Na)
Chlorine (Cl)
2. Which trend describes the increase in ionization energy across a period?
Decreased nuclear charge
Increased shielding effect
Decreased atomic radius
Increased metallic character
3. Electronegativity generally across a period and down a group.
4. Elements with high ionization energies tend to be , while those with low ionization energies tend to be .
5. The atomic radius increases as you move from left to right across a period.
True
False
6. Nonmetals generally have higher electronegativity values than metals.
True
False
7. Explain why ionization energy generally decreases as you move down a group in the periodic table.
8. Observe the periodic table element box below. Identify which periodic trend it best illustrates and explain why.
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