Understanding Changes in Solutions

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Factor for faster sugar dissolving

Back

Temperature of the tea

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DOK Level 2: Skill/Concept

Front

Distinguishing Physical vs Chemical Changes

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Physical: reversible (e.g., freezing water) | Chemical: new substances (e.g., rusting iron)

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DOK Level 3: Strategic Thinking

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High concentration of solute

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Large solute, small solvent

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DOK Level 2: Skill/Concept

Front

Reason sugar dissolves faster in hot water

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Hot water molecules move faster, increasing dissolution rate.

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DOK Level 3: Strategic Thinking

Front

Increasing surface area of solute

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Increases rate of dissolution

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DOK Level 2: Skill/Concept

Front

Preparing a dilute solution

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Add more solvent to concentrated solution

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DOK Level 3: Strategic Thinking

Front

Increase solute dissolution rate

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Agitate the solution

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DOK Level 2: Skill/Concept

Front

Chemical change example

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Change in color: leaves turning brown

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DOK Level 2: Skill/Concept

Front

Effect of temperature on solid solubility in water

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Solubility increases as temperature increases.

Tags

DOK Level 2: Skill/Concept

Front

Increasing surface area of solute

Back

Increases rate of dissolution