Solid Foldable Answers Liquid Gas Definite shape Indefinite

Solid Foldable Answers Liquid Gas Definite shape Indefinite shape Definite volume Indefinite volume Low kinetic energy Medium kinetic energy High kinetic energy Solid-liquid= melting Liquid-solid= freeze Solid-gas= Liquid-gas= sublimation evaporation Gas-solid= deposition Gas- liquid= condensation Melting pt= 32 F/ 0 C Freezing pt= 32 F/0 C Boiling pt= 212 F/100 C Ice, crystals Water vapor, steam

ö Finish States of Matter WS: will go over answers together ö Textbook: ö 465 1 -4, p. 483 1 -3 ö Read chapter 15 and use notes: p. 456 1 - 2, p. 465 1 -3, p. 470 1 -10, 14 -16, ö Pick up Basic of Science WS ö Pick up Review Sheet ö States of Matter WS ö Test Friday: scientific method, metric conversion, density, states of matter, properties

A. Matter Flowchart MATTER yes MIXTURE yes Is the composition uniform? Homogeneous Mixture (solution) no Can it be separated by physical means? PURE SUBSTANCE no Heterogeneous Mixture yes Can it be decomposed by chemical means? Compound no Element

MATTER Ch. 9 - Classification of Matter II. Composition of Matter (p. 246 -250) w Matter Flowchart w Pure Substances w Mixtures

B. Pure Substances ö Element w matter composed of identical atoms w EX: copper

B. Pure Substances ö Compound w matter composed of 2 or more elements in a fixed ratio w properties differ from those of individual elements w EX: salt (Na. Cl)

C. Mixtures ö Variable combination of 2 or more pure substances. ö Homogeneous Mixture (Solution) w even distribution of components w very small particles w particles never settle w EX: saline solution

C. Mixtures ö Heterogeneous Mixture w uneven distribution of components w colloids and suspensions w EX: granite

C. Mixtures ö Colloid w medium-sized particles w Tyndall effect - particles scatter light (looks cloudy) w particles never settle w EX: milk

C. Mixtures ö Suspension w large particles w particles scatter light w particles will settle (needs to be shaken) w EX: fresh-squeezed lemonade