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chemistry Science quiz for SSC, Physics for competitive exams,#Chemistry for competitive exams, Physics for RRB, #Chemistry for RRB, RRB, Physicsgeneral science topicsसामान्य विज्ञान (General Science) के विषयों में जीव विज्ञान (Biology), रसायन विज्ञान (Chemistry), भौतिकी (Physics), अंतरिक्ष विज्ञान (Space Science) और प्रौद्योगिकी (Technology) शामिल हैं, जिनमें कोशिका (Cell), मानव शरीर (Human Body), पोषण (Nutrition), रोग (Diseases), प्रकाश संश्लेषण (Photosynthesis), परमाणु संरचना (Atomic Structure), ऊर्जा (Energy), बल (Force) और गति (Motion) जैसे महत्वपूर्ण टॉपिक्स आते हैं, खासकर प्रतियोगी परीक्षाओं के लिएChemistry description words cover fundamental particles (atom, electron, proton, neutron), states of matter (solid, liquid, gas), properties (malleable, conductive, dense), reactions (oxidation, reduction, neutralization, synthesis, decomposition), bonding (covalent, ionic, hydrogen bond), and quantities (molarity, enthalpy, entropy), describing matter, its composition, structure, properties, and reactions. 
Particles & Structure
Atom, Molecule, Ion: Basic units of matter.
Electron, Proton, Neutron: Subatomic particles.
Nucleus: Atom's center.
Orbital, Energy Level: Electron locations/energies. 
States & Mixtures
Solid, Liquid, Gas: States of matter.
Solution, Solvent, Solute: Dissolved substances.
Alloy, Mixture, Emulsion: Combinations of substances. 
Properties & Behaviors
Density: Mass per unit volume.
Malleable, Ductile: Shapeable.
Conductive: Conducts electricity/heat.
Reactive, Inert, Stable: Tendency to react.
Exothermic, Endothermic: Releases/absorbs heat.
Acid, Base, pH: Acidity/basicity. 
Reactions & Processes
Synthesis (Combination), Decomposition, Displacement: Types of reactions.
Oxidation/Reduction (Redox): Electron transfer.
Catalysis, Inhibition: Speeds up/slows down reactions.
Distillation, Sublimation, Crystallization: Phase changes/separations.
Equilibrium: Reversible reaction balance. 
Terms for Bonding & Types
Covalent, Ionic, Metallic Bonds: Types of connections.
Polymer, Monomer: Large chain/building block.
Organic, Inorganic, Biochemistry, Physical, Analytical Chemistry: