Chp 2

Workable Organizes ideas Predict what will happen Help describe the not seen Describe observations

All matter is made of particles Particles always in motion Diffusion: process of mixing Brownian motion Space between particles Particles attract and repel(kinetic molecular theory)

Distinct particles of to or more atoms bond

Elements Compounds

Hetero Homo Physically combined

Solid Liquid Gases

Definite volume Definite shape Low compressibility Crystalline solid Vibration

Definite volume Shape according to the container Low compressability Movement but close Diff density Has viscosity

Indefinite volume Ind shape High compresability Fluid Moving alot Diff densities

Liquid

Without altering composition Color Density Hardness Crystalline form Electrical conductivity Texture Physical state Size soloubility Freezing/boiling points

Break and make new subs. Precipitate will form Sound or light is produced Color changes permanently Temperature change Gas is produced

Fluidity

Can be measured Observed And repeated

Fluidity

Can be measured Observed And repeated

Center of the atom Has protons and any neutrons Most mass

Positive charge Distinguishes atoms

Neutral charge Weigh about the same as protons

Negative Orbits space around nucleus

Chemically bonded