Matter _______ on heating ________ on cooling
Answers
Explanation:
Science is concerned with ordinary, material things and a scientific study of these shows them to be as interesting and as exciting as anyone could wish. Scientists have invented and developed many aids for the senses. Powerful microscopes and telescopes help to see things that are extremely small or far away. Matter exists in three states—solid, liquid, and gas Matter in each of its states consists of tiny particles that are moving. Energy is required to bring about a change of state. When a solid is heated, the particles gain sufficient energy to break away from one another and move past each other. The change from solid to liquid is called melting or fusion. When a liquid is steadily heated, the particles move rapidly until many of them have sufficient energy to escape from the liquid and form a gas. This change of state is called evaporation. The liquid can also be changed to the solid state. This change of state is called solidification. The temperature of a body is a measure of how hot it is and depends on the average energy of its particles
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Answer:
Matter expands on heating and contracts on cooling.
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