Ch : 5 States of Matter

Pages No. 68,69

Introduction

• The three states of matter are solid, liquid, and gas. Examples of each state include: 

  • Solids: Ice, wood, stone, iron, bricks, paper, concrete, glass, dry ice, salt, and most metals and minerals 

  • Liquids: Water, milk, juice, oil, alcohol, and mercury 

  • Gases: Air, helium, hydrogen, oxygen, nitrogen, carbon dioxide, and natural gas 

• The state of matter depends on how the particles are arranged and how much energy they have.

Solids 

• Have a definite shape and volume

• Particles are closely packed together and vibrate in place

Liquids 

• Have a definite volume but can change shape

• Particles are loosely bonded and move around but stay close together

• Take the shape of their container

Gases 

• Have neither a definite shape nor volume

• Particles move freely and spread apart from one another

• Fill their container, taking both the shape and the volume of the container