signs of a chemical reaction occurring include:
-formation of a gas (bubbles)
-change in color
-transfer of energy (change in temperature, giving off light)
-formation of a precipitate (if a solid forms out of solution)
Chemical change. References: Intro to Matter book.
You know a chemical change happened if: -A change in color -Formation of a precipate (a solid) -Formation of a gas
physical change. You know that it is a physical change because it can be reversed. An example of a chemical change would be cooking an egg. Because you cannot reverse the process.
i want to know the answer.............................................................................................................................................................................. .................................................................................................................................. ................................................................................................................................................ .................................................................................................................................................... ................................................................................................................................. ...................................................................................................................................... but I don't!
It is a Physical Change because i dont know but im sure that is a physical change :P
Chemical change. References: Intro to Matter book.
Fire is a chemical change in and of itself. The smoke is a product of that change.
Can you reverse the change?
Its a chemical change because its changing what it is (from dough to bread)
Does anyone know
dont know your out of luck
If a flask is contaminated, you may notice a change in color or odor of the contents. Growth of unexpected microorganisms, cloudiness in the liquid, or particles floating in the flask could also indicate contamination. It's important to use proper sterilization techniques to prevent contamination.
It's a chemical change. A chemical change is any change that causes a substance to change into another substance. A sign to know whether it's a chemical change or not, are the changes in odor. When something decays the change in smell is very powerful. Therefore, it is a chemical change.
chemical
Burning is a chemical reaction, an oxydation.
i dont know! what is really the answer?
Depending on the chemical, wether its HARMFUL or not, you'll know right away it is a chemical leak. Sometimes it accures on its owns, and you might never know its happening, That is why you should always have a fire alarm, including others.