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Periodic Properties and Variations of Properties - Physical and Chemical

ICSE · Class 10 · Chemistry

Step-by-step guide to study Periodic Properties and Variations of Properties - Physical and Chemical in ICSE Class 10 Chemistry. Topics to cover, practice strategy, and time allocation.

45 questions20 flashcards5 concepts

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A comprehensive labeled diagram of the modern long-form periodic table, clearly showing the s, p, d, and f blocks, numbered periods (1-7), and numbered groups (1-18).
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Study Plan

1
Day 1–2

Learn the Theory

Read the textbook chapter carefully. Note down definitions, formulas, and key concepts.

2
Day 3

Practice Problems

Solve textbook exercises and additional practice questions. There are 45 questions available for this chapter.

3
Day 4

Revise & Test

Revise key formulas and concepts without looking at notes. Take a practice quiz to test your understanding. Mark weak areas for re-revision.

4
Day 7

Spaced Revision

Revisit Periodic Properties and Variations of Properties - Physical and Chemical after a week. Use flashcards for quick recall. Solve previous year questions from this chapter.

What to Focus On

  • Modern Periodic Law is based on atomic number (Moseley), not atomic mass (Mendeleev).
  • The periodic table has 7 periods and 18 groups.
  • Periodicity is caused by the repetition of similar valence shell configurations.

  • Atomic radius = distance from nucleus centre to outermost electron shell.
  • Unit: Angstrom (Å) or picometre (pm); 1 Å = 10⁻¹⁰ m.
  • Atomic size INCREASES down a group (more shells added).

  • IE = energy needed to remove the most loosely bound electron from a gaseous atom.
  • Unit: kJ mol⁻¹; when in eV, called Ionisation Potential.
  • IE decreases DOWN a group (larger size, more shielding).

Common Mistakes to Avoid

Atomic size increases across a period because more electrons are being added

Ionisation energy always increases steadily and without exception across a period

Electron affinity and electronegativity mean the same thing

Memory Tips

Modern Periodic Law — properties are periodic functions of atomic number

Atomic size increases down a group

Atomic size decreases across a period (left to right)

Ionisation Energy (IE) — energy needed to remove the most loosely bound electron

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Frequently Asked Questions

What are the important topics in Periodic Properties and Variations of Properties - Physical and Chemical for ICSE Class 10 Chemistry?
Key topics in Periodic Properties and Variations of Properties - Physical and Chemical include Periodic Properties — Complete Overview Mind Map, Overview of Periodic Properties, Complete Concept Map: Periodic Properties of Elements. These are the concepts ICSE Class 10 examiners draw on most — study them first, then practise related questions.
How to score full marks in Periodic Properties and Variations of Properties - Physical and Chemical — ICSE Class 10 Chemistry?
Understand the core concepts first, then work through the 45 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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