How Soap perform cleansing action?
Soaps and detergents perform the cleaning action because the polar parts of their molecules are water soluble due to hydrogen-bonding and non-polar parts remain outside water.
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Steam produces more severe burns than does the boiling water. Why?
In order to bring about phase change, latent heat is absorbed without any change in temperature. Because heat energy stored in steam is greater than that of boiling water at same temperature. Therefore steam produces more severe burns than does the boiling water.
How to find empirical formula | Combustion Analysis
An analytical procedure in which an organic compound is burnt to determine the percentage of each element present in the compound is called combustion analysis. In combustion analysis, weighed amount of an organic compound is burnt in the stream of oxygen in a closed tube known as combustion tube. At the end of this tube…
Stoichiometry
The study of relationship between the amounts of reactants and products as indicated by the balanced chemical equation is called stoichiometry. Explanation: Stoichiometry is used to calculate the amount of the product formed or that of the reactant required in a reaction. Stoichiometric calculations are performed by the following assumptions in hand: Reactants are completely…
Properties of Liquids
Liquids have following properties. 1. Liquids have definite volume. However, they do not have definite shape. 2. The molecules of liquids are in state of constant motion. The evaporation and diffusion of liquids is the result of their motion. 3. The densities of liquids are much greater than those of gases but are closer to…
What is Evaporation?
Definition: The spontaneous escaping of molecules of a liquid from their surface at any temperature is called evaporation. Evaporation Process: Most common question in this regard is, How does evaporation work? All the liquid molecules do not contain the same kinetic energies. Speed of molecules depends upon kinetic energy. Molecules with high kinetic energy move…
Crystal Lattice Definition Chemistry | Unit Cell Definition
A crystal lattice is defined as an array of points representing atoms, ions or molecules of a crystal, arranged at different sites in three dimensional space. Formation: A crystal may contains atoms, ions or molecules. In crystalline solids, these atoms, ions or molecules are located at definite positions in space. These are represented by points…
