Warm-up: Aqueous Solutions Review

What defines a dilute solution?

• It contains a large amount of solute relative to the solvent.

• It contains a small amount of solute compared to the solvent.

• It contains an equal amount of solute and solvent.

• It contains no solute.

Which statement accurately describes a concentrated solution?

• It has a small amount of solute relative to the solvent.

• It has an equal amount of solute and solvent.

• It has a large amount of solute relative to the solvent.

• It contains only solvent.

What type of chemical reaction is primarily demonstrated in the video?

• Acid-base neutralization

• Oxidation-reduction

• Precipitation

• Decomposition

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NGSS.MS-PS1-2

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What visible change occurs when aqueous copper(II) sulfate is added to aqueous sodium hydroxide?

• The solution becomes colorless

• A gas is released

• A blue solid forms

• The mixture heats up significantly

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NGSS.MS-PS1-2

What is the main topic discussed in this video?

• Factors influencing the rate of chemical reactions

• Factors influencing the rate of dissolution

• Factors influencing the rate of precipitation

• Factors influencing the rate of evaporation

How does increasing the temperature of a solvent affect the rate of dissolution?

• It decreases the kinetic energy of solvent molecules, slowing dissolution.

• It increases the kinetic energy of solvent molecules, speeding dissolution.

• It has no effect on the rate of dissolution.

• It causes the solute to precipitate out of the solution.

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How does the color of a concentrated solution typically compare to a dilute solution, assuming the solute adds color?

• A concentrated solution is usually lighter in color.

• A concentrated solution is usually darker or brighter in color.

• Both solutions have the same color intensity.

• Color is not an indicator of concentration.

What happens when a solution becomes oversaturated?

• All of the solute completely dissolves.

• The solvent evaporates quickly.

• Some of the solute remains undissolved at the bottom.

• The solution becomes more dilute.

What is the effect of agitating a solution on the rate of dissolution?

• It slows down the dissolution process by reducing molecular collisions.

• It prevents the solvent from interacting with the solute.

• It helps solvent molecules reach the solute more quickly, increasing dissolution rate.

• It causes the solute to become less soluble.

How does increasing the surface area of a solute impact its dissolution rate?

• It decreases the rate of dissolution because there is less contact with the solvent.

• It increases the rate of dissolution by exposing more solute particles to the solvent.

• It has no significant effect on how quickly the solute dissolves.

• It causes the solvent to evaporate more quickly.