Chapter 2 Matter and Change 2.1 Properties of Matter 2.2 Mixtures 2.3 Elements and Compounds 2.4 Chemical Reactions Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. .

State of Matter Depends on: Kinetic Energy – movement of particles States of Matter State of Matter Depends on: Kinetic Energy – movement of particles (temperature) Intermolecular Forces – forces between molecules Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. .

Solids Definite shape and volume. States of Matter Solids Definite shape and volume. Shape does NOT depend on shape of container. Particles packed tightly together. Almost incompressible. Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. .

Liquids Particles close together, but NOT rigid or orderly. States of Matter Liquids Particles close together, but NOT rigid or orderly. Indefinite shape because particles are free to flow. Volume is fixed. Almost incompressible. Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. .

Takes shape and volume of container. Particles are far apart. States of Matter Gases Takes shape and volume of container. Particles are far apart. Easily compressed. https://www.youtube.com/watch?v=jKMNSvpB9dY Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. .

melting point - temperature at which a solid changes into a liquid. A Model for Solids melting point - temperature at which a solid changes into a liquid. freezing point - temperature at which a liquid changes into a solid. Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.

A Model for Solids sublimation - change of a substance from a solid to a vapor, without passing through the liquid phase. deposition - change of a substance from a vapor to a solid without passing through the liquid state.. Solid Vapor (gas) sublimation deposition Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.

Vaporization: conversion of a liquid to a gas or vapor. Vapor Pressure Liquid Vapor (gas) vaporization condensation Vaporization: conversion of a liquid to a gas or vapor. Evaporation: conversion of a liquid to a gas at the surface of a liquid that is not boiling Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.