| Method |
Precise Learning Objective |
Linked |
Question / Activity
(Designed for maximum working out) |
Stepping Stones |
Pitstop Check
(Thinking Map) |
| T |
If a solid can dissolve in particular liquid then it is know as 'soluble'. |
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What does soluble mean? |
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| T |
If a solid cannot dissolve in particular liquid then it is know as 'insoluble' |
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What does insoluble mean? |
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| W |
Solutions are mixtures of solids and liquids, in which the solid breaks down and behaves like a liquid. |
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What is a solution? |
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| T |
The solid added is called the solute. |
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What is the solid that dissolves in a liquid called? |
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| T |
The liquid added is called the solvent. |
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What is the liquid a solid dissolves into called? |
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| T |
The large solute (solid) crystal break down into smaller molecules which fit between the particles of the solvent. |
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What happens to the solute particles when they dissolve? |
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| W |
The solid can now behave like a liquid as the small molecules can move relative to each other. |
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How do the particles behave once they have dissolved? |
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| T |
A saturated solution is one that can not dissolve any more solute. |
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What does it mean when a solution is saturated? |
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| W |
When all the gaps between particles are full, no more solute can be dissolved. |
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In terms of particles, why does a solution become saturated? |
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| W |
Increasing the temperature of the solvent, increases the speed the particles collide, creating bigger gaps.
This allows more solute to dissolve in the solvent. |
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Why does increasing the temperature increase the amount of solute that can dissolve? Investigating solubility by finding out the saturation point for water and salt. recrod mass of salt added. Consider changing one variable such as temperature of water, stirring etc.
Demo:
once salt saturation has been reached, filter one sample add some sugar and ask students why the sugar has dissolved?
EW: Explain what happened using the big ideas
GF: Compare the structure and bonding of salt and sugar particles to explain why the sugar can be dissolved even though the salt saturation point has been reached |
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| W |
Solubility is a measure of how much solute can be dissolved in a solvent. |
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What is solubility? |
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