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Hydrogen gas, symbol H, molecular formula H2 is a colourless, odourless, tasteless, flammable chemical substances uses and physical properties in chemistry

Hydrogen

pH scale chart for acid base and neutral solution in pure water

pH Scale

Electronic configuration of general chemical elements and energy levels of electron

Electronic Configuration

Formation of ionic bond and compounds in chemistry

Ionic Bond

Enzymes and Enzyme Catalysis Reactions

Enzymes