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 Properties of Materials 30 Flashcards |
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What is the term for the substance that dissolves in a liquid? |
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Solute |
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Which of the following is a characteristic of a concentrated solution? A) Contains fewer solute particles B) Contains more solute particles C) Is always colourless D) Is always opaque |
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B) Contains more solute particles |
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True or False: All solutions are opaque and cannot be seen through. |
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False. All solutions are transparent, though they may not be colourless. |
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Riddle: I mix with water, yet I can be solid in a different form. What am I? |
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A solute |
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The formula for mass conservation during dissolving is mass of solute + mass of solvent = ______. |
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Mass of solution |
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When a solute cannot dissolve in a solvent, it is described as ______. |
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Insoluble |
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What happens to the solubility of most solutes when the temperature of the solvent increases? |
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The solubility increases. |
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Which of the following solutes is known for having low solubility in water? A) Sodium chloride B) Lead chloride C) Sugar D) Baking soda |
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B) Lead chloride |
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True or False: Paper chromatography is a technique used to mix substances in a solution. |
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False. Paper chromatography is used to separate dissolved substances in a mixture. |
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Fill in the blank: The result of paper chromatography is called a ______. |
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Chromatogram |
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What does the term 'solvent front' refer to in paper chromatography? |
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The furthest point reached by the solvent on the chromatography paper. |
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Riddle: I’m a technique that separates colors, but I’m not a painter. What am I? |
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Paper chromatography |
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In an investigation, what is the independent variable when studying how temperature affects solubility? |
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The temperature of the water. |
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Which of the following substances can dissolve in methanol but not in water? A) Sugar B) Salt C) Oil paint D) Sodium chloride |
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C) Oil paint |
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Fill in the blank: When no more solute can dissolve in a solvent, it forms a ______ solution. |
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Saturated |
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