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Particle Model

solid, gas and liquids

QuestionAnswer
What are the 3 states in a particle model? solid, liquid and gas
Solid. In solids, strong forces hold the p________ together in a 3 d_________ structure. The particles in all solids move little/ alot. They do/do not change position, but v_______ to and fro. particles, dimensional, little, do not, vibrate
Liquid. Explain the particles in liquid. How do they change position? liquid particles have freedom and can move around each other. They slide over one another when changing position.
Gas. Explain the particles in gas. The forces of attracting between the particles are very small/big? The particles move freely, moving away from each other and travel in all directions. When they hit each other, or the surface they bounce and change direction.
What happens when solids are heated? What happens when solids cools? when heated, they expand when cool, it contracts
What would happen if two different strips of metals stuck together form a bimetallic strip? Ex, iron and brass. What situations can u use them for? because different solids expand by different amounts for a given temperature rise. The metal would then bend. - in a fire alarm circuit
What is the boiling point? what is the melting point? the temperature at which a solid changes into a liquid. the temperature at which a liquid changes into a gas.
Explain about the particles when liquid changes to gas. As liquid receives more and more heat, its particles become more active. Eventually they become so active that they lose grip of each other and become gas. It can occur at the surface of the liquid or inside the liquid where the gas particles form bubbl
Created by: hamizah
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