Help with a chemical.

[David Adams]

Hi,

 

I am just wondering. Is there a chemical or anything that changes colour upon impact. Thank you!

[DevilSolution]

Upon impact of what? light? another chemical? or another object?

[David Adams]

Upon impact of what? light? another chemical? or another object?

Of another object

[Sensei]

Try for example Zinc Hydroxide and Acetic Acid.

Zinc Hydroxide is white,

Zinc Acetate is colorless.

 

Other example is black Copper Oxide CuO,

after reaction it often change to blue compound.

Edited December 1, 2015 by Sensei

[Phi for All]

Certain compounds change color under pressure.

 

Carbon turns clear under enough pressure.

[studiot]

Two posts and we are no clearer what you want to achieve.

 

When you say under impact, what do you mean change colour?

 

Do you mean just during the impact?

Does it have to maintain the new colour after imapct?

Or should it revert to its old colour after the very short term impact forces have dissipated?

 

Can it be a contraption rather than a material?

 

Why impact?

What about sustained pressure?

 

Or what about tension?

Soap films go through dramatic colour changes as the tension varies.

[David Adams]

Ok, let me clear this up.

 

What i want:

 

A name of a chemical or any other form of liquid that changes colour when pressure is applied. However i want the colour to stay there for lets say around a minute and only in the area that was struck.

 

Why impact? - Some thing i am working on needs it

What about sustained pressure? - I am not to bothered as long as it changes colour and stays there for about a minute

Or what about tension? - Again not that bothered. All i need is when something suddenly his the liquid it suddenly changes colour

Edited December 1, 2015 by David Adams

[studiot]

What happens if you hit a liquid with a hammer?

 

[David Adams]

What happens if you hit a liquid with a hammer?

 

It changes colour and the colour stays for a little while before going away that would be perfect

[John Cuthber]

What happens if you hit a liquid with a hammer?

 

It depends.

Toffee shatters.

[Phi for All]

Piezochromatic pigments.

[David Adams]

Piezochromatic pigments.

Thank you this looks, hopeful.. Ill explore the site* a little more!

 

Any other contributions would still be great!

Edited December 1, 2015 by David Adams

[David Adams]

Anyone else got any ideas?

[DevilSolution]

Theres liquid crystals that change colour when in contact with heat, even small amounts, so if you were to place the encased crystals on something (even your hand) they will change colour.

 

https://en.wikipedia.org/wiki/Liquid_crystal

 

https://en.wikipedia.org/wiki/MBBA

Edited December 3, 2015 by DevilSolution

[David Adams]

Theres liquid crystals that change colour when in contact with heat, even small amounts, so if you were to place the encased crystals on something (even your hand) they will change colour.

 

https://en.wikipedia.org/wiki/Liquid_crystal

 

https://en.wikipedia.org/wiki/MBBA

Intresting, thank you!