A mixture that contains physically distinct parts and has non-uniform compositions.

What is a heterogeneous mixture?

Give an example of a heterogeneous mixture.

The solute is the substance that is dissolved, while the solvent is the substance that dissolves the solute.

What is the difference between a solute and a solvent?

Smaller than 1 nm (10^-9 meter) in diameter.

What is the size of particles in a solution?

They do not settle down, making the solution stable.

What happens to solute particles in a solution when left undisturbed?

The amount of solute present in a given amount of solution.

What is the concentration of a solution?

Colloids appear homogeneous and do not settle, while suspensions are heterogeneous and the particles settle.

What is the difference between a colloid and a suspension?

Different substances have different solubilities at the same temperature.

What is the role of temperature in solubility?

Elements cannot be broken down into simpler substances, while compounds are made of two or more elements chemically combined.

What is the difference between elements and compounds?

They have lustre, conduct heat and electricity, and are malleable and ductile.

What are the properties of metals?

They are poor conductors of heat and electricity and are not lustrous.

What are the properties of non-metals?

A mixture has a variable composition, while a compound has a fixed composition.

What is the difference between a mixture and a compound?

To separate solid particles from a liquid.

What is the process of filtration used for?

It indicates how much solute can dissolve in a solvent at a given temperature.

What is the significance of the solubility of a substance?

A dilute solution has a small amount of solute, while a concentrated solution has a large amount of solute.

What is the difference between a dilute and a concentrated solution?

Some solute may crystallize out of the solution.

What happens when a saturated solution is cooled?

Oxygen (21%) and nitrogen (78%).

What is the main component of air?

Gas in a liquid solution is an example of aerated drinks, while solid in a liquid solution is like sugar in water.

What is the difference between a gas in a liquid solution and a solid in a liquid solution?

The solvent dissolves the solute.

What is the role of a solvent in a solution?

Mass by mass percentage is the mass of solute divided by the mass of solution, while mass by volume percentage is the mass of solute divided by the volume of solution.

What is the difference between mass by mass percentage and mass by volume percentage?

It allows for the separation of insoluble solids from liquids.

What is the significance of the filtration process?

A solution is homogeneous and does not scatter light, while a colloid is heterogeneous and scatters light.

What is the difference between a solution and a colloid?

Generally, solubility increases with temperature.

What is the effect of temperature on the solubility of salts?

A pure substance has a uniform and definite composition, while a mixture has a variable composition.

What is the difference between a pure substance and a mixture?

The solute is the substance that is dissolved in the solvent.

What is the role of a solute in a solution?

Homogeneous mixtures have a uniform composition, while heterogeneous mixtures do not.

What is the difference between a homogeneous and a heterogeneous mixture?

The properties of a compound are different from those of its constituent elements.

What is the significance of the properties of a compound?

To separate colloidal particles from a mixture.

What is the process of centrifugation used for?

A solution is stable and homogeneous, while a suspension is unstable and heterogeneous.

What is the difference between a solution and a suspension?

It helps in identifying and separating substances in various applications.

What is the importance of understanding mixtures and solutions in daily life?

Light scattering indicates the presence of colloidal particles.

What is the role of light scattering in identifying colloids?

The composition is always fixed and determines the properties of the compound.

What is the significance of the composition of a compound?

A saturated solution contains the maximum amount of solute, while an unsaturated solution contains less.

What is the difference between a saturated and an unsaturated solution?

Temperature affects how much solute can dissolve in a solvent.

What is the role of temperature in the formation of a saturated solution?

It varies and affects how solutions are prepared and used.

What is the significance of the solubility of different substances?

Colloidal particles can scatter light, while solution particles cannot be seen.

What is the difference between a colloid and a solution in terms of particle visibility?

Mixtures are common in nature and can be separated into pure substances.

What is the importance of mixtures in chemistry?

Understanding Mixtures and Solutions Flashcards

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61 questions

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1.

FLASHCARD QUESTION

Front

Having no adulteration.

Back

What does 'pure' mean for a common person?

2.

FLASHCARD QUESTION

Front

All constituent particles of a substance are the same in their chemical nature.

Back

What does 'pure' mean for a scientist?

3.

FLASHCARD QUESTION

Front

A pure substance consists of a single type of particle.

Back

What is a pure substance?

4.

FLASHCARD QUESTION

Front

A mixture is constituted by more than one kind of pure form of matter.

Back

What is a mixture?

5.

FLASHCARD QUESTION

Front

Yes, by evaporation.

Back

Can sodium chloride be separated from water by physical processes?

6.

FLASHCARD QUESTION

Front

A mixture that has a uniform composition throughout.

Back

What is a homogeneous mixture?

7.

FLASHCARD QUESTION

Front

Salt dissolved in water.

Back

Give an example of a homogeneous mixture.

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