ICSE Class 7 Chemistry — Chapter Summary

Matter is anything that has mass, occupies space, and can be perceived by our senses. It includes living and non-living things, natural substances, and man-made objects. Matter is made up of extremely small particles called atoms, and atoms combine to form molecules. The behaviour of these particles

Matter changes all around us in different ways. Some changes are temporary and affect only the form, while others are permanent and form new substances with different properties. Changes may happen slowly or quickly, naturally or because of human activity, and they may be desirable or undesirable. T

Matter is classified into three main groups: elements, compounds and mixtures. Elements are pure substances made of one kind of atom only. Compounds are pure substances formed when two or more elements chemically combine in a fixed ratio by mass. Mixtures are impure substances made by mixing two or