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What kind of evidence can you use to determine if a chemical reaction has occurred?
Wiki User
∙ 9y ago
- fizzing
- color change (of course, this exempts artificial coloring)
- odor
- formation of precipitate
- production of gas
- formation of new substance (elemental bonding)
Wiki User
∙ 9y ago
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What would not be evidence that a chemical reaction has occurred in a container?
a perfectly claen container
What is present after a chemical reaction?
That depends on the chemicals present before the chemical reaction and sometimes the conditions under which the chemical reaction occurred.
If the chemical properties of the substance have not changed has a chemical reaction occurred?
It depends: just try to relate, try to write a chemical equation for and see if there are byproducts. Most likely, if the same chemical still has its same properties After the reaction, a chemical reaction has not occurred.
Is a soluble aspirin fizzing in water a chemical reaction?
Yes. If there is the appearance of a gas (fizzing), then a chemical reaction has occurred.
When a substance is broken down or combined formingnew substance a has occurred?
A chemical reaction has occurred.
What would not be evidence that a chemical reaction has occurred in a container?
a perfectly claen container
What is the only sure evidence for a chemical reaction?
The only way to be sure a chemical reaction or change has occurred is to test the composition of a sample before and after a change.
What kinds of evidence can you use to determine of a chemical reaction has occurred?
fizzingcolor change (of course, this exempts artificial coloring)odorformation of precipitateproduction of gasformation of new substance (elemental bonding)
What kinds of evidence can you use to determine if chemical reaction has occurred?
fizzingcolor change (of course, this exempts artificial coloring)odorformation of precipitateproduction of gasformation of new substance (elemental bonding)
There are several types of evidence that suggests a chemical reaction has occurred What always happens?
A new compound is formed
What evidence is there that a chemical reaction has occurred in an automobile?
Yes there is a chemial reaction,when gas is compressed by piston temperature increases so it cathes the fire.
How does a chemical equation show that a chemical reaction has occurred?
A chemical equation shows that chemical reaction has occurred as new substances have been formed from the reagents. A chemical equation has two sides before reaction and after reaction, if there is any change from the before reaction side to the after reaction side, it indicates that a chemical reaction has just occurred.
How can you be sure that at least one chemical change has occurred?
Evidence that a chemical reaction has taken place usually include appearance of a precipitate, change in color, or production of a gas.
What is present after a chemical reaction?
That depends on the chemicals present before the chemical reaction and sometimes the conditions under which the chemical reaction occurred.
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.
If the chemical properties of the substance have not changed has a chemical reaction occurred?
It depends: just try to relate, try to write a chemical equation for and see if there are byproducts. Most likely, if the same chemical still has its same properties After the reaction, a chemical reaction has not occurred.
A chemical reaction has not occurred if the products have?
The same chemical properties as the reactants.
