Raoult's Law & Phase Equilibria Lowersixth Science Chemistry

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Assess key concepts in equilibria and solutions.

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Raoult's Law & Phase Equilibria Lowersixth Science Chemistry


Froggy Jumps Raoult's Law & Phase Equilibria Lowersixth Science ChemistryVersion en ligne Assess key concepts in equilibria and solutions. par YAKILI LMS 1 What is a state of chemical equilibrium? a Only products exist b Reactants are all consumed c Rates of forward and reverse reactions are equal 2 Which is true about a one-component system? a Has no phase changes b Contains only one chemical species in all phases c Contains multiple solvents 3 A pure substance in equilibrium between solid and liquid is called? a Vaporization equilibrium b Fusion equilibrium c Sublimation equilibrium 4 In a two-component system, what is a key feature? a Only gases are present b No phases are present c Two components interact and form a phase diagram 5 What defines a solution? a A heterogeneous blend b Homogeneous mixture of solute in solvent c A pure element 6 Which term describes the maximum amount of solute that can dissolve? a Solubility b Osmosis c Molarity 7 Which property describes how much solute dissolves at a given temperature? a Boiling point b Solubility c Density 8 What is an unsaturated solution? a Already holds maximum solute b Cannot dissolve any solute c Can dissolve more solute at a given temperature 9 What is a saturated solution? a Solute-free solution b No solute present c Contains as much solute as possible at that temperature 10 What defines a supersaturated solution? a Has no solute b Contains more solute than normally possible at that temperature c Is a pure solvent 11 Which factor mainly affects solubility? a Temperature b Pressure for liquids c Color 12 Henry's law relates gas solubility to what? a Partial pressure of the gas b Temperature only c Volume of solvent 13 What type of mixture is a solution? a Homogeneous b Heterogeneous c Colloidal 14 If solute particles settle, the mixture is probably? a A solution b An emulsion c A suspension 15 Which process separates components by differences in boiling point? a Chromatography b Distillation c Filtration 16 What is osmosis? a Net movement of solvent through a semipermeable membrane b Movement of solute through membrane c Mixing of solutions 17 Raoult's law helps predict... a Boiling point elevation only b Vapor pressure lowering in solutions c Freezing point depression only 18 Which statement describes ideal solutions? a Always endothermic b Always exothermic c Behave ideally at all compositions 19 Which term means the solvent's ability to dissolve solute? a Solvent power b Solvency c Solubility product 20 What is a solvent typically in a solution? a The component in larger amount b The component in smaller amount c The solute's catalyst 21 In a solution, solute is... a Dispersed in air b Exchanged with solvent c Dispersed in the solvent 22 Which property measures solvent concentration? a Viscosity b Density c Molarity 23 Which process is used to separate components by size in a mixture? a Distillation b Filtration c Crystallization 24 What is the boiling point of a solution compared to the pure solvent? a Always lower b Always the same c Usually higher due to dissolved solute 25 What does colligative property depend on? a Solvent color b Number of solute particles c Solute type only 26 What is a molar solubility? a Moles of solute per liter of solution b Mass of solute per liter c Moles of solvent per liter 27 Which part of a two-component system varies with composition? a Phase distribution b Color only c Temperature only 28 What is a phase diagram used for? a Only for solids b Only for reactions c Show phases vs temperature and composition 29 What happens at the eutectic point? a Maximum solubility b Highest boiling point c Lowest melting mixture of components 30 What is a homogeneous solution’s appearance? a Uniform throughout b Separated layers c Colored bands 31 Which property indicates how many ions dissolve in water? a Color b Boiling point c Conductivity 32 Which is an example of a solvent in sea water? a Oxygen b Water c Salt 33 What is a binary solution? a A solution with two components b Three components c Only gases 34 What affects gas solubility most in liquids? a Volume b Pressure c Color 35 What does a solubility curve show? a Solubility vs temperature b Vapor pressure vs temperature c Density vs pressure 36 Which statement is true about solutions? a They are uniform at the molecular level b They are always opaque c They separate into layers over time 37 What is the term for water acting as a solvent? a Hydrophobic b Aqueous c Hydroionic 38 Which statement describes miscibility? a Solubility of solids in gas b Conductivity of mixtures c Extent to which two liquids mix 39 Which process forms a solution from a solid and a solvent? a Precipitation b Dissolution c Filtration 40 What is a common unit of solubility expressed as g per 100 g solvent? a Molality b G/100 g c Molarity 41 Which is a colligative property? a Odor change b Boiling point elevation c Color change 42 What determines if a solution forms? a Color of solute b Intermolecular interactions c Air pressure 43 Which term means two components solidify together? a Solid–solid phase b Gas–solid reaction c Liquid–gas phase 44 What happens to solubility with increasing temperature for most solids? a Remains constant b Solubility increases c Solubility decreases 45 Which term describes the lowering of vapor pressure by solutes? a Henry's law b Raoult's law effect c Le Chatelier's principle 46 What is a characteristic of a heterogeneous solution? a Uniform in composition b Always transparent c Not uniform throughout 47 Which process uses a semipermeable membrane? a Distillation b Osmosis c Filtration 48 What is the main role of a solvent? a Separates phases b Dissolves solute c Repels solute 49 What term defines the ability of a solvent to dissolve a solute? a Density b Solubility c Viscosity 50 Which type of equilibrium involves a single component changing phase? a Binary equilibrium b Multi-phase equilibrium c Tri-phase equilibrium

Raoult's Law & Phase Equilibria Lowersixth Science Chemistry

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Raoult's Law & Phase Equilibria Lowersixth Science ChemistryVersion en ligne

par YAKILI LMS

What is a state of chemical equilibrium?

Which is true about a one-component system?

A pure substance in equilibrium between solid and liquid is called?

In a two-component system, what is a key feature?

What defines a solution?

Which term describes the maximum amount of solute that can dissolve?

Which property describes how much solute dissolves at a given temperature?

What is an unsaturated solution?

What is a saturated solution?

What defines a supersaturated solution?

Which factor mainly affects solubility?

Henry's law relates gas solubility to what?

What type of mixture is a solution?

If solute particles settle, the mixture is probably?

Which process separates components by differences in boiling point?

What is osmosis?

Raoult's law helps predict...

Which statement describes ideal solutions?

Which term means the solvent's ability to dissolve solute?

What is a solvent typically in a solution?

In a solution, solute is...

Which property measures solvent concentration?

Which process is used to separate components by size in a mixture?

What is the boiling point of a solution compared to the pure solvent?

What does colligative property depend on?

What is a molar solubility?

Which part of a two-component system varies with composition?

What is a phase diagram used for?

What happens at the eutectic point?

What is a homogeneous solution’s appearance?

Which property indicates how many ions dissolve in water?

Which is an example of a solvent in sea water?

What is a binary solution?

What affects gas solubility most in liquids?

What does a solubility curve show?

Which statement is true about solutions?

What is the term for water acting as a solvent?

Which statement describes miscibility?

Which process forms a solution from a solid and a solvent?

What is a common unit of solubility expressed as g per 100 g solvent?

Which is a colligative property?

What determines if a solution forms?

Which term means two components solidify together?

What happens to solubility with increasing temperature for most solids?

Which term describes the lowering of vapor pressure by solutes?

What is a characteristic of a heterogeneous solution?

Which process uses a semipermeable membrane?

What is the main role of a solvent?

What term defines the ability of a solvent to dissolve a solute?

Which type of equilibrium involves a single component changing phase?