1 Chapter 14 Lesson 1 Pages E74 – E79 STATES OF MATTERChapter 14 Lesson 1Pages E74 – E79
2 Objectives Identify some properties of each state of matter. Recognize that matter exists in three familiar states, or phases.
3 Main IdeaMatter can exist in three familiar states: solids, liquids, and gases. These states are determined by the motion and arrangement of particles.
4 States of Matter It is the physical form that matter takes up There are three familiar states:SolidLiquidgas
5 Particles and States of Matter All matter is made up of atoms & moleculesThe movement of these particles determines the state of matterSolids: particles are held together very closely. They vibrate in place.Liquids: particles can slip past each other and move about.Gases: particles are spread very far apart. Constantly moving and bouncing off one another.
6 SOLIDS A form of matter that has a definite shape and volume One property of a solid is they keep their shape.Another property is definite volume.Foam football is a solid. When squeezed it appears to change shape & volume, but it is actually the pockets of air that change.
7 LIQUIDSA form of matter that has a definite volume, but no definite shape.Liquid will change shape to match the shape of its container.No definite shape because their particles are not held rigidly in place.Any substance whose particles can flow freely is called a fluid.
8 GAS A form of matter that has no definite shape or volume The particles are constantly moving & bouncing off each otherWhen gas is placed in a container, the particles spread out to fill the container and take its shape.The particles are free to move and flow, which means all gases are fluids
9 GAS Unlike solids & liquids, gases are very compressible. Gases have much lower densities than liquids & solids.Objects with lower densities float in fluids with higher densities.
10 STATES OF MATTER Property Solid Liquid Gas Definite Shape Yes No Definite VolumeCompressibleFluidParticle SpacingCloseVaries