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Matter has chemical and physical properties. Physical properties include density, melting point, boiling point, freezing points, colour and smell. Chemical properties include whether it is a metal or non-metal, an acid or a base, and, importantly, how it combines with other substances in a reaction. Matter can change in two There are two contrasting views we can take of matter. At the most fundamental level is the microscopic view in which we regard matter as a collection of atoms and molecules. This is essential for understanding the chemical changes a substance is able to undergo, but it is not usually what we consider when we look at the A. Atoms and Molecules Matter is made up of tiny particles called atoms and molecules. The picture describes three states of matter—solid, liquid, and gas—in terms of the speed and attraction of the particles. Page 3. II. Solids. A. Solids Have Definite Shape and Volume: A solid is the state of matter that has a definite shape UNIT 5. After studying this unit you will be able to. • explain the existence of different states of matter in terms of balance between intermolecular forces and thermal energy of particles;. • explain the laws governing behaviour of ideal gases;. • apply gas laws in various real life situations;. • explain the behaviour of real gases;. COURSE CONTENT. 1. Define matter and state of matter. 2. Properties of solids, liquids and gases. 3. Changes in matter. ? Physical and chemical changes. ? Phase changes of matter. 4. Classification of matter. ? Elements, compounds and mixtures. 5. Separation of mixtures Hot, daytime. States of Matter. BIG Idea Kinetic-molecular theory explains the different properties of solids, liquids, and gases. 12.1 Gases. MAIN Idea Gases expand, diffuse, exert pressure, and can be compressed because they are in a low-density state consisting of tiny, constantly-moving particles. 12.2 Forces of Attraction. 6 States of matter. Almost all substances on Earth can be grouped as solids, liquids or gases. By comparing the properties of solids, liquids and gases, you can begin to answer questions such as 'What are substances made of?' This question has fascinated people for thousands of years, and scientists are still looking for WHAT KIND OF CHANGES DOES MATTER. UNDERGO? 0 All matter, regardless of state, undergoes physical and chemical changes. These changes can be microscopic or macroscopic. Matter is made up of particles too small to be seen. The three states of matter are solid, liquid, and gas. Solids, liquids and gases can be characterized by their properties (including volume, shape, and the movement and spacing of particles). The Four States of Matter. Four States; Solid; Liquid; Gas; Plasma. STATES OF MATTER. Based upon particle arrangement; Based upon energy of particles; Based upon distance between particles. Kinetic Theory of Matter. Matter is made up of particles which are in continual random motion. STATES OF MATTER SOLIDS.