Structure of Matter Classifying and Applying Particle Theory.
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Transcript of Structure of Matter Classifying and Applying Particle Theory.
Characteristics of Solids, Liquids and GasesSolids Liquids Gases
Particles have slight vibration movement
Particles move around each other in all directions
Particles move very fast in all directions.
Particles are tightly packed and stay in same position. (definite volume and shape)
Particles are still close together but change position relative to each other. (definite volume; takes the shape of container)
Particles are very far apart. (volume and shape change with container)
Strong forces of attraction between particles.
Medium strength forces between particles.
Very weak forces of attraction between particles
Plasma
•very hot gas•made up of charged particles (both
positive and negative) … that is what the word “ionized” means.
• influenced by electric and magnetic fields.
This state of matter expands when heated and contracts when cooled.
A.SolidsB.LiquidsC.GasesD.All three
Particles take the shape of their container but keep a constant volume.
A.SolidsB.LiquidsC.GasesD.All three
Still creating particles … atoms.•New Element 115 Takes a Seat at the
Periodic Table•Scientists create a very heavy atom with a
very short life span•By Jeffrey Kluger Aug. 28, 20130
Mixtures
•In grade 7 we simply refer to atoms and molecules as particles.
•If we have a container will all one type of particle we call it a pure substance.
•If we have a container that has two or more different particles in it we have a mixture.
Classify the following as pure substance “A” or mixture “B.”•tap water•salt water•the air we breathe•a tank of helium gas•distilled water•a pizza•aluminum foil•table sugar
Types of Mixtures
Homogeneous mixtures
•otherwise called “solutions”•look the same througout; you see one
thing•more than one type of particle but mixed
uniformly•seawater, steel, tea
Types of Mixtures
Heterogeneous mixtures
•otherwise called “mechanical mixtures”•you see more than one thing•more than one type of visible particle •pizza, soil, salt and pepper
Classify the following as solutions “A” or mechanical mixtures “B.”•fruit salad•apple juice•pizza dough before cooking•tap water•the air we breathe•greek salad
Identify the solute in each of the following solutions.•A salt water solution is used to disinfect
an infected toe.•Windshield washer is a solution of alcohol
in water.•Nail polish will dissolve in nail polish
remover thus cleaning your nails.•Instant coffee is made by dissolving
crystals in boiling water.
Identify the solvent in each of the following solutions.•A solution of little bleach in water will
make the laundry whiter.•Brass is a solution of molten zinc or tin
dissolved in molten copper and then allowed to harden.
•Kool-aide crystals dissolved into water make a tasty drink.
•Air is made up of mostly nitrogen with some oxygen and other gases mixed throughout.