Andhra Pradesh (BIEAP)Class 9Subject library

Andhra Pradesh (BIEAP) Class 9 Physical Science

Chapter-wise notes, previous year papers, sample papers and Q&A for Andhra Pradesh (BIEAP) Class 9 physical science — free, syllabus-aligned, exam-ready.

10 chapters~148 min read totalFree · printable

Chapters

10 chapters — sequenced for revision and exam prep.

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Matter in Our Surroundings

Complete AP Class 9 Matter in Our Surroundings: STATES OF MATTER — solid, liquid, gas. INTERCONVERSION with latent heat (fusion, vaporisation). EVAPORATION and factors affecting it. SUBLIMATION. PLASMA and BEC. KELVIN SCALE. AP Board Class 9 Physical Science.

AP Board (BSEAP)⏱ 14 minRead chapter

Is Matter Around Us Pure

Complete AP Class 9 Is Matter Around Us Pure: PURE SUBSTANCES vs MIXTURES. ELEMENTS and COMPOUNDS. SOLUTIONS (saturated, unsaturated, supersaturated). SUSPENSIONS and COLLOIDS (Tyndall effect). SEPARATION TECHNIQUES — evaporation, crystallisation, chromatography, distillation, fractional distillation, separating funnel, centrifugation. AP Board Class 9 Physical Science.

AP Board (BSEAP)⏱ 14 minRead chapter

Physical Science — Motion, Laws, Atoms, Chemical Bonding (AP Class 9)

Complete AP Class 9 Physical Science: MOTION (equations, graphs). LAWS OF MOTION (Newton's three laws, momentum, conservation). ATOMIC STRUCTURE (Bohr, quantum numbers, electronic configuration). CHEMICAL BONDING (ionic, covalent). BSEAP Class 9 Physical Science.

AP Board (BSEAP)⏱ 16 minRead chapter

Atomic Structure

DALTON to BOHR — the complete evolution of atomic models. RUTHERFORD'S gold foil experiment and the discovery of the NUCLEUS. BOHR'S MODEL. Atomic number, mass number, isotopes, isobars. Electronic configuration of first 20 elements. AP Board Class 9 Physical Science.

AP Board (BSEAP)⏱ 14 minRead chapter

Chemical Bonding

Why atoms BOND — the OCTET RULE explained. IONIC BOND — NaCl and MgO formation, crystal lattice, properties. COVALENT BOND — H₂, O₂, N₂, CH₄, H₂O, CO₂. COORDINATE BOND. Lewis dot structures. Comparing ionic vs covalent. AP Board Class 9 Physical Science.

AP Board (BSEAP)⏱ 14 minRead chapter

Motion

Complete AP Class 9 Motion: DISTANCE vs DISPLACEMENT. SPEED vs VELOCITY. ACCELERATION. Three EQUATIONS OF MOTION (v=u+at, s=ut+½at², v²=u²+2as) with worked examples. DISTANCE-TIME and VELOCITY-TIME graphs. UNIFORM CIRCULAR MOTION. AP Board Class 9 Physical Science.

AP Board (BSEAP)⏱ 16 minRead chapter

Laws of Motion

NEWTON'S THREE LAWS OF MOTION — Inertia, F=ma, Action-Reaction. Galileo's thought experiment on inertia. INERTIA and mass. MOMENTUM and its conservation with worked examples. Mass vs weight. Common misconceptions. AP Board Class 9 Physical Science.

AP Board (BSEAP)⏱ 16 minRead chapter

Gravitation

Complete GRAVITATION for AP Class 9 — Newton's Universal Law of Gravitation. Free fall and acceleration due to gravity (g). MASS vs WEIGHT. Thrust and PRESSURE. BUOYANCY and Archimedes' Principle. Relative density. Why objects FLOAT or SINK. NCERT-aligned 2025-26 syllabus.

AP Board (BSEAP)⏱ 15 minRead chapter

Work and Energy

Complete WORK AND ENERGY for AP Class 9 — scientific definition of WORK (W=Fs cosθ). KINETIC ENERGY (½mv²) and POTENTIAL ENERGY (mgh). Law of CONSERVATION of Energy. POWER and the commercial unit (kWh). Energy transformations. NCERT-aligned 2025-26 syllabus.

AP Board (BSEAP)⏱ 15 minRead chapter

Sound

Complete AP Class 9 Sound: PRODUCTION and PROPAGATION. LONGITUDINAL WAVES. CHARACTERISTICS — amplitude, frequency, time period, wavelength. SPEED OF SOUND. REFLECTION — echo, reverberation. SONAR. HUMAN EAR — structure and working. AP Board Class 9 Physical Science.

AP Board (BSEAP)⏱ 14 minRead chapter