Category: Chemistry

Ionic bonds occur when electrons are transferred from one atom to another, forming positively and negatively charged ions that attract each other. Example: NaCl (table salt). Covalent bonds occur when electrons are shared between atoms to achieve a stable electron configuration. Example: HO (water).

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Give reason

March 30, 2026

Give reason : (A) Magnesium ribbon is need to be clean before burning. (B) Chemical equation need to balance. (C) Silver chloride turn white to grey on exposing in sunlight. (D) A brown fumes is formed on heating lead nitrate. (E) On diluting an acid always put acid into water not water into acid. (F) […]

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Numerical

March 30, 2026

Calculate the 5 mole of energy of photon . If wavelength of monochromatic light is 7500A .

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Matter in our surroundings

March 30, 2026

(A) Tabulate the difference in the characteristics of the three states of matter. (B) Comment upon the following: Rigidity, Compressibility, Shape, Density, Diffusion, Volume Intermolecular force of attraction, Intermolecular space.

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Determine unknown molecule structure using IR, H NMR, and C…

March 29, 2026

I have an organic chemistry assignment where I must determine the structure of an unknown compound using the empirical formula and spectroscopic data (IR, H NMR, and C NMR). The compound formula is C8H5NO2. I need help analyzing the spectra, determining the degrees of unsaturation, identifying functional groups from the IR, interpreting the NMR signals […]

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Chemical reaction

March 29, 2026

What is chemical reaction ? write the characteristics of chemical reactions and also write the types of chemical reactions.

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Law of multiple proportion

March 29, 2026

Define the law of multiple proportion. Explain it with two examples. How does this law point to the existence of atoms?

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Electronegativity of carbon atom

March 29, 2026

Explain,how is the electronegativity of carbon atoms related to their State of hybridization in an organic compound.

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Chemistry Question

March 29, 2026

Chapter: Chemical Reactions and Equations 1. Chemical Reaction A chemical reaction is a process in which one or more substances change into new substances. Reactants = starting substances Products = new substances formed Example: Magnesium + Oxygen Magnesium Oxide What happens (diagram explanation in words): A magnesium ribbon is burned in air. It burns with […]

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Electrochemistry

March 28, 2026

Study of conversion between chemical energy and electrical energy