This attraction pulls the atoms together and the electrons are shared by both atoms. The atoms bond because there is a strong enough attraction in both directions and room for the electrons in the ...

This means that the chemical formula used for a metal is simply the symbol for the element. For example, the formula for iron is Fe, even though a piece of iron contains very many iron atoms.

A small piece of sodium metal is placed in a flask of chlorine gas. A little water helps expose the sodium so it can react with the chlorine gas. The reaction releases a lot of heat as the ionic ...

Bonding and properties of materials Only the noble gases exist as individual atoms not bonded to other atoms. In all other substances atoms are held together by chemical bonds, either sharing or ...

Topics include stoichiometry; thermodynamics; gases, liquids, and solids; equilibrium; acids and bases; bonding concepts; kinetics; reactions; and materials science. Examples and problems illustrate ...

The Council for the Indian School Certificate Examinations (CISCE) conducted the ICSE Class 10 Chemistry Exam 2025 today, ...