What are the 5 signs that show a chemical change has taken place?
I wrote:
- theres a smell of ordur
- change in color
- fizzing or bubbling
- percipitate forms
- difficult to reverse
Could you name a couple more please and tell me if those are right. Thank you.
I would add to that when a new chemical compound has been formed.
Thank you so much :)
Form new substance (new structure)
Liberate energy
Form new molecules
Change bonding
Thanks You :)
I wrote:
- theres a smell of ordur odor
- change in color
- fizzing or bubbling
- percipitate forms precipitate
- difficult to reverse
I think the last one doesn't fit.
Temperature change is another way to tell a chemical rxn has took place.
I also corrected some spelling errors above.
Energy could be in the form of
a) heat
b) light
Your initial answers are correct. Here are a couple more signs that indicate a chemical change has occurred:
1. Temperature change: If there is a significant change in temperature, either an increase or decrease, it suggests a chemical reaction has occurred. For example, if a reaction produces heat, it may indicate an exothermic reaction.
2. Light emission: Some chemical reactions emit light, which can be an indication of a chemical change. For example, fireworks exploding or glow stick reactions.
It is important to note that these signs may not be present in every chemical reaction. Sometimes, only one or two signs may be observable. Additionally, the signs you mentioned in your initial response are also accurate indicators of a chemical change.