How Can You Separate Salt and Pepper Without Physical Contact?

[some_one]

we mix one spoon of salt
and one spoon of pepper together
and mix them

how to separate them without touching the mixed salt and pepper

no physical touching aloud

 

[Sakha]

If no physical touching allowed then we can't physically separate them.
Separating the salt and pepper pots is aloud?

 

[some_one]

like obama says
YES WE CAN

 

[some_one]

when do i need to post the answer to the puzzle?

 

[arildno]

Are the grains of equal size?

 

[arildno]

when do i need to post the answer to the puzzle?

Let it mature a bit, let people come along with suggestions and questions.

 

[some_one]

we need to separate them without touching the mix physicly

 

[some_one]

the granes are equal in size

 

[some_one]

first clue
acctually it doesn't matter

 

[arildno]

Equal density?Same form?

 

[rootX]

Pepper and salt have different melting points ... is that possible?

different mass?

 

[some_one]

what is your method of separation?

 

[rootX]

put some heat on it and evaporate chillies (collect somewhere : flash -- no touching)

2) Use air force...

 

[Evo]

Pepper doesn't melt.

 

[rootX]

Pepper doesn't melt.

sounds impossible..

I am considering something 1400 deg C or over...

I thought pepper has lower melting point than salt
(don't know what kind of bonds it has ... )

 

[some_one]

yeee but pepper which origins from a plant when heated
comes in contact with the oxigen in the air
and gets burned

which is not aloud

 

[LowlyPion]

Take a balloon and rub it on a wool sweater, then hold it right above the mixture.

 

[some_one]

biiiiingooooo
you are correct

 

[Evo]

sounds impossible..

I am considering something 1400 deg C or over...

Wouldn't that would be more along the lines of incineration?

 

[rootX]

Wouldn't that would be more along the lines of incineration?

That never happened in my chemistry class/course/book :shy:

 

[Jimmy Snyder]

I actually mixed a pinch of salt and of pepper with the intention of boiling the mixture. I figured the pepper would drift to the bottom of the water and the salt would diffuse. Then after boiling the salt would form a crust above the pepper. But as soon as I put the mixture in the water, the salt sank to the bottom and the pepper floated on top. Separate.

 

[some_one]

no physical touching aloud
static electricity is the answer

 

[Jimmy Snyder]

no physical touching aloud
static electricity is the answer

Because electricity is not physical?

 

[sketchtrack]

I have a better question, how do you separate a mix of salt and pepper using no energy?

 

[DaveC426913]

no physical touching aloud

OK, for future reference, it's 'allowed'.

 

[Sakha]

Static electricity is still physical interaction for me. Anyways, with static electricity you grab pepper or salt?

 

[LowlyPion]

Static electricity is still physical interaction for me. Anyways, with static electricity you grab pepper or salt?

pepper

 

[Werg22]

How about a centrifuge? I figure that salt is heavier than pepper.

 

[Sakha]

How about a centrifuge? I figure that salt is heavier than pepper.

You can't have physical interaction, and getting the mix into a centrifuge without physically touching it would be pretty hard.

 

[DaveC426913]

Static electricity is still physical interaction for me.

It most distinctly is not.

You could slip a solid object such as a piece of paper between the balloon and the mixture. No physical contact.

 

[Jimmy Snyder]

It most distinctly is not.

You could slip a solid object such as a piece of paper between the balloon and the mixture. No physical contact.

It most distinctly is

You could slip a solid object such as a piece of glass between the balloon and the mixture. No separation.

 

[DaveC426913]

It most distinctly is

You could slip a solid object such as a piece of glass between the balloon and the mixture. No separation.

You appear to be saying that "it most distinctly is" physical contact between the balloon and the mixture. Is that what you meant to say?

My point was I could slip something between balloon and mixture, demonstrating that no physical contact is necessary to in order to separate the substances.