element definition

Class 11 Chemistry Chapter Stoichiometry Notes

Class 11 Chemistry Chapter Stoichiometry Notes Stoichiometry is quantitative chemistry. “Calculations based on the law of conservation of mass, law of constant composition and balanced chemical equations are called stoichiometric calculations.”     Science, Society Relationship: Stoichiometry has many applications in human society. It calculates: Concentrations of different substances in a sample. Glucose in the blood …

Class 11 Chemistry Chapter Stoichiometry Notes Read More »

Types of Substances – Elements and Compounds Properties and Types

Substances: A sample of pure matter is called a substance or anything whose composition is uniform throughout and has well-defined physical and chemical properties is called a substance. E.g. Silver, Gold, Water, NaCl, etc. Types of Substances: They are of two types: i) Elements         ii) Compound Element  That pure substance that can’t …

Types of Substances – Elements and Compounds Properties and Types Read More »

%d bloggers like this: