Chapter 2 Chemistry Lesson 2 Changes of State Essential Questions: 1.) What happens to particles of a solid as it melts? 2.) What happens to particles.

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Presentation transcript:

Chapter 2 Chemistry Lesson 2 Changes of State Essential Questions: 1.) What happens to particles of a solid as it melts? 2.) What happens to particles of a liquid as it vaporizes? 3.) What happens to particles of a solid as it sublimes?

Particles In A Liquid, Solid and Gas Animation

The change from a solidMelting to a liquid Particles in a solid Energy is added. The particles vibrate faster and break from their fixed position. Particles in a liquid

The change from a liquidFreezing to a solid Particles in a liquid The water loses energy. The particles move so slowly they take on a fixed position. Particles in a solid

The change from a liquid Vaporization to a gas Particles in a liquid The particles gain enough energy to move independently. Particles in a gas

Takes place Evaporation only on the surface of a liquid Takes place Boiling below and at the surface of a liquid

The change from a gas Condensation to a liquid Particles in a gas The particles lose energy. Particles in a liquid

The surface particles Sublimation of a solid gain energy and form a gas Surface particles in a solid Particles in a gas Gain enough energy