Unit A: Mix and Flow of Matter
Study Guide
Topic 1: Matter on the Move
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Particle Theory of Matter
Be able to differentiate between solid, liquid, and gas particles
Changes of State Diagram p.11
Topic 2: Mixing and Dissolving
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Classification of Matter
o Pure Substances (elements, compounds)
o Mixtures (homogeneous vs. heterogeneous)
 Solution, Mechanical Mixture, Suspension, Colloid, Emulsion
Dissolving: What is dissolving? What would increase the rate of dissolving?
o Solute vs. Solvent
Solubility: Unsaturated, saturated, supersaturated solution
o Soluble vs. Insoluble
Topic 3: Separating Earth’s Mixtures
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Know the different methods used to separate mixtures
o Picking out with tongs, magnetism, distillation, evaporation, settling
(sedimentation), floatation, sifting, filtration, and fractional distillation
Residue, Filtrate, Distillate – know what these terms mean!
Topic 4: Flow Rate and Viscosity
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Viscosity (know what the word “viscous” means)
Know the relationship between flow rate and viscosity
What is the rule for viscosity of LIQUIDS?
What is the rule for viscosity of GASES?
o Be able to explain BOTH!
Topic 5: Density
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Density – be able to define, describe how the density of solids, liquids, gases
vary (ex. Why can’t Ms. Zalys walk through a table?)
Density as a mass to volume ratio
What is the difference between mass and weight?
Know density formula – be able to manipulate it to solve for mass and volume
o KNOW UNITS FOR MASS, VOLUME, AND DENSITY!!
Density Online Laboratory: know rules mass vs. volume and density:
o If mass > volume SINK, if mass < volume FLOAT
o If object density > fluid density SINK
o If object density < fluid density FLOAT
Topic 6: Buoyancy
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What is buoyancy? What is buoyant force?
What is average density?
Know Archimedes’ Principle!
What is a hydrometer? How does it work to measure buoyancy?