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Chapter 9: liquids, solids, and solutions. The Rock Cycle. You are here. The Rock Cycle. Igneous. metamorphic. Sedimentary. The Rock Cycle. Igneous. Igneous means “born of fire”. Bedrock. Magma. But then the EARTH. Won’t leave The poor rock alone!. Ice Wind Water. ice. wind.
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The Rock Cycle Igneous metamorphic Sedimentary
The Rock Cycle Igneous Igneous means “born of fire”
Bedrock Magma
But then the EARTH Won’t leave The poor rock alone!
Ice • Wind • Water ice wind water
Compression of sediments is One way Sedimentary Rock can be formed
The Rock Cycle Igneous metamorphic ? Sedimentary
The Rock Cycle Igneous metamorphic kinda melted squished Sedimentary
Bands (can) form Metamorphic means “changed” Metamorphic!
The Rock Cycle igneous metamorphic Sedimentary
liquids • Made up of particles in constant motion • Particles closer together than gases • Less KE than gases
Definite volume • Fluidity • Relatively high density • Relatively incompressible • Dissolving ability • Ability to diffuse • Tendency to evaporate and boil • Tendency to solidify
Solids (2 types) • Crystalline (crystal): particles in orderly geometric pattern • Amorphous: random arrangement
Definite shape • Definite volume • Nonfludity • Definite melting point • High density • Incompressibility • Slow rate of diffusion
Changes of state • Solid liquid (melting) • Solid gas (sublimation)
Liquid solid (freezing) • Liquid gas: (vaporization)
Triple point: solid, liquid, gas coexist at equilibrium for water = 273.16 kelvins (0.01 °C) and a pressure of 611.73 pascals (ca. 6.1173 millibars, 0.0060373057 atm). • Critical temperature: gas can not be converted to a liquid no matter how much pressure is exerted beyond the critical temp. for water =374°C (647.096 K)
Solutions • Homogeneous mixtures
Electrolyte • Substance that dissolves in water and gives a solution that conducts electric current, e.g. NaCl
Nonelectrolyte • Does not conduct electricity, e.g.sugar • WHY??
Solvent • Dissolving medium
Solute • Substance dissolved
Types of Solutions • 1. Gaseous, e.g. air
3. Solid, e.g. brass (solution of copper and zinc) + =
Alloy • Mixtures in which 2 or more elements (usually metals) are uniformly mixed
Solubility • The amt. of a substance required to form a saturated soln. with a specific amt. of solvent at a given temp.