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A heat-sensitive stone, such as a thermochromic or mood stone, changes color in response to variations in temperature. These stones are often used in jewelry to create interactive and dynamic designs that reflect changes in the wearer's environment or body temperature.

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1y ago

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What are the special properties of enzymes?

Enzymes reduce the activation energy of a reaction. They accomplish this feat by altering the local chemical environment of the substrates while typically bringing the reactants into close proximity and even stabilizing conformers that promote reaction.


What can take more heat metal or stone?

Stone can generally withstand more heat than metal. This is because stone has a higher melting point than most metals, making it better suited for high-temperature environments. However, it is important to note that the specific type of metal or stone can also impact their heat resistance.


What control methods will sterilize but not break down heat sensitive material?

Some control methods that can sterilize heat sensitive materials without breaking them down include ethylene oxide (ETO) gas sterilization, hydrogen peroxide gas plasma sterilization, and liquid chemical sterilants like peracetic acid. These methods can effectively sterilize materials without exposing them to high heat that could cause damage.


Can stone turn to liquid when heat is applied?

No, stone does not turn to liquid when heat is applied. Instead, stone will typically undergo a phase change from solid to liquid only if it reaches its melting point, which is very high for most types of stone.


Under what conditions is sterilization by filtration preferred over sterilization by heat?

Filtration is preferred over heat sterilization when the substance being sterilized is sensitive to heat and could be damaged or denatured by high temperatures. Filtration is a gentler method that can effectively remove microbial contaminants without subjecting the substance to extreme heat. Additionally, filtration can be used for sterilizing heat-sensitive liquids or gases that cannot be autoclaved.