WHAT ARE THE TWO TYPES OF SOLIDS? • Crystalline • Amorphous LIST 2 OF THE 4 TYPES OF CRYSTALLINE SOLIDS. • Ionic • Covalent Network • Metallic • Molecular _____ IS THE MEASURE OF KINETIC ENERGY • Temperature __________CRYSTALS ARE SINGLE ATOMS COVALENTLY BONDED TO NEAREST NEIGHBORS IN AN EXTENSIVE PATTERN. • Covalent Network LIST AN EXAMPLE OF A SUBSTANCE THAT SUBLIMES AT ROOM TEMPERATURE. • Iodine, dry ice (solid CO2) TRUE OR FALSE: AMORPHOUS SOLIDS DO CONTAIN ANY CRYSTAL DEFECTS. • FALSE LIST 2 EXAMPLES OF AMORPHOUS SOLIDS. • Glass, plastics, rubber, polymers, cement EXPLAIN USING KMT, HOW SOLIDS ARE RELATIVELY INCOMPRESSIBLE COMPARED TO GASES. • Solid particles are so tightly packed together that there is no room to push them closer _________ CRYSTALS ARE COVALENTLY BONDED MOLECULES ATTRACTED AND HELD TOGETHER BY ATTRACTIVE FORCES. • Molecular DESCRIBE THE SHAPE OF SOLIDS. EXPLAIN WHY USING KMT. • Definite – b/c particles are vibrating around FIXED points _________ IS THE ENERGY OF MOTION • Kinetic Energy LIST ONE STANDARD PRESSURE. 760 torr 760 mm Hg 101.3 Kpa 1 atm __________ CRYSTALS ARE POSITIVE METAL IONS SURROUNDED BY NEGATIVE VALENCE ELECTRONS THAT BELONG TO THE CRYSTAL AS A WHOLE AND ARE ATTRACTED TO THE POSITIVE IONS. • Metallic CONVERT THE FOLLOWING: 293 K = _____C • 20 C LIST ONE TEMPERATURE THAT ALL MOLECULAR MOTION WOULD STOP AT OK -273 C WHICH PHASE OF MATTER HAS THE FASTEST (NOT VIOLENT)AVERAGE KINETIC ENERGY? • GASES ACCORDING THE KMT, “COLLISIONS BETWEEN PARTICLES ARE PERFECTLY ELASTIC”. WHAT DOES THAT MEAN? • There is NO energy loss! DESCRIBE THE IM FORCES OF SOLIDS COMPARED TO LIQUIDS. • IM forces are MORE significant in solids than liquids IF THE TEMPERATURE OF WATER WAS DECREASED, WHAT HAPPENS TO THE KINETIC ENERGY? • Kinetic energy DECREASES WHAT TYPE OF SOLID IS GLASS CONSIDERED? • Amorphous solid DESCRIBE THE PARTICLE MOTION OF SOLIDS • Particles vibrate around fixed points WHAT IS THE DIFFERENCE BETWEEN A UNIT CELL AND CRYSTAL LATTICE? • Unit cells make up the crystal lattice WHERE CAN YOU FIND PLASMA? • Neon or fluorescent lights • Sun/stars • Lightning WHAT HAPPENS AT ABSOLUTE ZERO? • All molecular motion stops DESCRIBE THE VOLUME OF SOLIDS. EXPLAIN WHY USING KMT. • Definite- b/c particles are tightly packed together __________ IS WHEN UNIT CELLS DO NOT LINE UP • Dislocation WHICH PHASE OF MATTER HAS THE SLOWEST AVERAGE KINETIC ENERGY? • Solids LIST THE 3 ASSUMPTIONS TO THE KMT 1) 2) 3) All matter is made of particles All particles are in constant motion Collisions between particles are perfectly elastic ____________WOULD CONTAIN ATOMS MADE UP OF FREE ELECTRONS AND IONS OF THE ELEMENT. • Plasma DESCRIBE THE PARTICLE MOTION OF LIQUIDS • Particles vibrate around moving points DESCRIBE A SOLID IN TERMS OF MOVEMENT. • Particles vibrate around fixed points __________ IS A PROCESS THAT DELIBERATELY MAKES CRYSTALS IMPURE • Doping LIST ONE STANDARD TEMPERATURE. 273 K 0 C _______ ARE IMPURITIES THAT ARE PRESENT IN CRYSTALS • Inclusion LIST 2 EXAMPLES OF CRYSTALLINE SOLIDS • Minerals, sand, clay, salts, metals, carbon, limestone DESCRIBE A SOLID IN TERMS OF PARTICLE SPACING. • Particles are very close together CONVERT THE FOLLOWING: 10C = _____K • 283 K WHICH PHASE OF MATTER HAS THE MOST VIOLENT AVERAGE KINETIC ENERGY? • Plasma WHAT ABBREVIATION IS USED TO SHOW STANDARD TEMPERATURE AND PRESSURE AT SEA LEVEL? • STP HOW DO AMORPHOUS SOLIDS DIFFER FROM CRYSTALLINE SOLIDS? PROVIDE ONE DIFFERENCE Crystalline = defined melting points; uniform pattern • Amorphous = NO defined melting points; NO uniform pattern • _________ ARE SOLIDS WITHOUT A GEOMETRIC PATTERN, NO CRYSTALLINE FORM • Amorphous crystals DESCRIBE THE PARTICLE MOTION OF GASES • Particles are moving in completely random motions WHAT IS ONE FACTOR THAT WOULD AFFECT CRYSTAL FORMATION? • Temperature • Pressure DO SOLIDS HAVE LOW OR HIGH RATES OF DIFFUSION? ______________ EXPLAIN USING KMT. • LOW • Particles vibrate in a fixed position so that does not allow easy spontaneous mixing WHAT IS THE DIFFERENCE BETWEEN COLD PLASMA AND HOT PLASMA? • • Hot plasma = gas molecules are fully ionized Cold plasma = only a small fraction of the gas molecules are ionized ________ CRYSTALS ARE IONICALLY BONDED POSITIVE AND NEGATIVE IONS IN A REGULAR PATTERN. • Ionic EXPLAIN USING KMT, HOW THE SOLID STATE IS MORE DENSE THAN THE LIQUID STATE OF THE SAME TYPE OF MATTER. In solids, the particles are closer together than liquids. Therefore, more particles per unit volume = more dense • ________ IS CHANGING FROM A SOLID STATE TO A GASEOUS STATE • Sublimation WHAT IS AN ADVANTAGE OF DOPING A CRYSTAL? • Increases electrical conductivity FILL IN THE MISSING Phase Shape Volume Solid Definite Definite Liquid Gas Plasma INFORMATION. Avg. Kinetic Energy Particle Spacing Slow Very close together Not Mediu Moderately Definite spaced m Definite Not Not Definite Definite Fast Very far apart Not Not Definite Definite Very fast Very far apart Particle Motion IM Forces Vibrating in Most a fixed significant position Vibrating around moving points Less significant Continuous, random motion Little to none Violent Little to none