PARTICULATE NATURE OF MATTER

Chemistry

PARTICULATE NATURE OF MATTER

Atoms are the basic units of matter and the defining structure of elements. Atoms are made up of three particles: protons, neutrons and electrons. Protons and neutrons are heavier than electrons and reside in the center of the atom, which is called the nucleus. Electrons are extremely lightweight and exist in a cloud orbiting the […]

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Chemistry

PARTICULATE NATURE OF MATTER

Atoms are the basic units of matter and the defining structure of elements. Atoms are made up of three particles: protons, neutrons and electrons. Protons and neutrons are heavier than electrons and reside in the center of the atom, which is called the nucleus. Electrons are extremely lightweight and exist in a cloud orbiting the

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Chemistry

PARTICULATE NATURE OF MATTER

In our daily life, we come across many objects, the knowledge about which can be gained by one or more of our senses like sight, touch, hearing, taste and smelling. These objects possess mass, occupy space and may have different shapes, sizes and colours. All these objects constitute matter. Matter may thus, be defined as

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Chemistry

PARTICULATE NATURE OF MATTER

ATOMS AND MOLECULES Matter is made up of discrete particles. The main ones are atoms, molecules, and ions. An atom is the smallest part of an element which can take part in a chemical reaction. A molecule is the smallest particle of a substance that can exist alone and still retains the chemical properties of

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Physics

PARTICULATE NATURE OF MATTER

States of matter Matter is anything that occupies space. Matter exists in three states: solids, liquids and gases. Matter can be changed in various ways which includes physical, chemical and nuclear changes. a) Physical changes– they are normally reversible and no new substances formed. Examples are; (i) Change of state such as melting and vaporization

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