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What indicators definitely show that a chemical reaction has taken place?
Wiki User
∙ 7y ago
use red cabbage , lemon juice,
and milk. this will tell you whatever you put into if what you mix is and acid or alkali
Wiki User
∙ 13y ago
Wiki User
∙ 7y agoIndicators that a chemical reaction has taken place would include:
change in color
appearance of a gas (bubbles)
change in temperature
formation of a precipitate
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Is bananas turning black if you leave them in a warm cupboard for a week a chemical reaction and why?
Yes, it is a chemical reaction, because the colour of the banana has changed, which shows that a chemical reaction has taken place. Also, if the banana has gone black and turned bad, you can't change it back to it's original form, which proves that it is a chemical reaction and not a physical reaction. Remember - A chemical reaction has definitely taken place if : It's colour has changed A gas is given off There are energy changes Or, it can't be changed back to what it used to be! :) Hope this helps!!
Heat is felt when a warm object is place in your hand chemical reaction?
It's a physical reaction not a chemical reaction.
What chemical reaction happens to salt when you heat it?
when we heat the salt there chemical reaction is takes place
Were chemcal reaction takes place cell organelles?
chemical reaction takes place
If you are trying to decide whether a chemical reaction does or does not take place when two substances are mixed what kind of evidence will you look for?
change of state change of colour fizzing/gas bubbles
What changes gives NO evidence that a chemical reaction has taken place?
Physical changes give no evidence that a chemical reaction has taken place, because no chemical reaction has taken place.
What do you see when a chemical reaction takes place?
Some indicators of a chemical reaction are: - change of color - change of odor - release of a gas - change of the temperature - change of the viscosity - formation of a precipitate - change of general appearance - possible explosion - possible chemiluminiscence - formation of new compounds
Is bananas turning black if you leave them in a warm cupboard for a week a chemical reaction and why?
Yes, it is a chemical reaction, because the colour of the banana has changed, which shows that a chemical reaction has taken place. Also, if the banana has gone black and turned bad, you can't change it back to it's original form, which proves that it is a chemical reaction and not a physical reaction. Remember - A chemical reaction has definitely taken place if : It's colour has changed A gas is given off There are energy changes Or, it can't be changed back to what it used to be! :) Hope this helps!!
What are four possible signs that a chemical reaction has taking place?
Some indicators of a chemical reaction are:- change of color- change of odor- release of a gas- change of the temperature- change of the viscosity- formation of a precipitate- change of general appearance- possible explosion- possible chemiluminescence -formation of new compounds
Heat is felt when a warm object is place in your hand chemical reaction?
It's a physical reaction not a chemical reaction.
What a chemical reaction mean?
A chemical reaction is; when there is a chemical change taking place from energy or shifting of molecular structure.
What chemical reaction happens to salt when you heat it?
when we heat the salt there chemical reaction is takes place
What evidence is there to show that a chemical reaction has taken place when an egg is cooked?
The change in color indicates that a chemical reaction has taken place.
What type of reaction take place in rancidity?
chemical reaction takes place in rancidity
Were chemcal reaction takes place cell organelles?
chemical reaction takes place
If you are trying to decide whether a chemical reaction does or does not take place when two substances are mixed what kind of evidence will you look for?
change of state change of colour fizzing/gas bubbles
What take place during a chemical reaction?
During a chemical reaction the breaking of the older bonds and formation of the new bonds take place.
