How do I implement a thermometer into an osmosis experiment?

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AspiringAccount
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#1
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#1
I'm thinking of using this experiment.
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999tigger
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#2
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(Original post by AspiringAccount)
I'm thinking of using this experiment.
Are you sure you need a thermometer? The two experiments i just looked at for osmosis are the same potato strips in salt solution?
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euphrosynay
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#3
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you could use a thermometer to make sure the temperature, as a control variable, is the same for all the different containers (e.g. test tubes)
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AspiringAccount
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(Original post by 999tigger)
Are you sure you need a thermometer? The two experiments i just looked at for osmosis are the same potato strips in salt solution?
I'm damn sure.
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999tigger
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(Original post by AspiringAccount)
I'm damn sure.
When ive looked I dont believe any of them used one. I looked at 4 versions. Euphro may be correct though. I mau have just missed it.
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AspiringAccount
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(Original post by 999tigger)
When ive looked I dont believe any of them used one. I looked at 4 versions. Euphro may be correct though. I mau have just missed it.
The only other thing i've got that might help is the title of the experiment i'm supposed to investigate. Title-
The effect of different sugar concentrations on osmosis in a potato.
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999tigger
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(Original post by AspiringAccount)
The only other thing i've got that might help is the title of the experiment i'm supposed to investigate. Title-
The effect of different sugar concentrations on osmosis in a potato.


This? No thermometer though.
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euphrosynay
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(Original post by 999tigger)


This?
most likely yes; it's a gcse required practical

the title shows what's being changed (sugar concentration) and what's being measured (change in mass, showing osmosis)
control variables, time and temperature, need to be the same in all conditions - time affects how much osmosis happens and temperature affects rate (how much osmosis happens over a certain time)
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999tigger
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Ok have looked again and it appears that you can change temperature of the solution to alter the rate of osmosis.
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AspiringAccount
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#10
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(Original post by euphrosynay)
most likely yes; it's a gcse required practical

the title shows what's being changed (sugar concentration) and what's being measured (change in mass, showing osmosis)
control variables, time and temperature, need to be the same in all conditions - time affects how much osmosis happens and temperature affects rate (how much osmosis happens over a certain time)
How exactly do I time all the solutions so that they all get the equal time of 30 minutes to go through osmosis.
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AspiringAccount
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#11
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(Original post by 999tigger)
Ok have looked again and it appears that you can change temperature of the solution to alter the rate of osmosis.
This is interesting but i'll keep it simple. Thanks for doing the research appreciate it.
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euphrosynay
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#12
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(Original post by AspiringAccount)
How exactly do I time all the solutions so that they all get the equal time of 30 minutes to go through osmosis.
that would be difficult, especially if you're working on your own, and are only using one stopwatch.

the best you could do is probably include in the method that you would need to put the potatoes in as quickly as possible, and then start the stopwatch. it might also be worth acknowledging that as a possible source of error.
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