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Is evaporation a sign of chemcal change?
No, evaporation is a physical change and not a sign of a chemical change. Evaporation involves the change of a substance from a liquid to a gas without altering its chemical composition.
What is one of the signs of a chemical change?
There are four common clues to the fact that a chemical change is occurring, though they are not always definitive:a gas is produceda precipitate is formedthere is a colour changethere is a large energy change.
What is the most likely sign that a chemical change has happened?
The most likely sign that a chemical change has occurred is the formation of a new substance with different properties. This can include color changes, formation of a precipitate, evolution of gas, or changes in temperature.
A change in color is evidence of a change?
yes **Why? I need more than just yes. Tell why.** ok ok ok its not always a sign that there is a reaction but in most cases it will be. things that show a reaction are temperature change (usually increase but not always) mass change, state change or physical change. hope this helps
When a substance gives off or absorbs heat is that a sign that describes a sign of a chemical change occurring?
Yes, if a substance gives off or absorbs heat, it could be a sign that a chemical change is occurring. This process is known as an exothermic or endothermic reaction, respectively, which are common indicators of chemical reactions.
Is a common sign that a chemical change has occurred?
A change in pH or conductivity will always hint to a chemical change. Also less technical signs can be a change in volume or color
Is boiling always a sign of a chemical reaction?
No, boiling is not always a sign of a chemical reaction.
Is changing of color a sign of chemical change?
The change of color may be a sign of a chemical reaction.
What is a sign that chemical change has occurred?
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
What is good sign that a chemical change has occurred?
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
What is one sign of a chemical change?
Change of color
Is production of gas a potential sign of chemical change?
The release of a gas can be a sign for a chemical reaction.
Is evaporation a sign of chemcal change?
No, evaporation is a physical change and not a sign of a chemical change. Evaporation involves the change of a substance from a liquid to a gas without altering its chemical composition.
Is copper and silver a chemical or physical change?
It is a chemical change because it leaves a residue (which is a sign of chemical change) Hope that helps
How is rotting a chemical change?
garbage rotting is a chemical change because the odour becomes different which is considered a sign of chemical change.
When is a phase change and when is it a sign of a chemical change?
After a physical change the molecule remain intact.After a chemical change the molecule is modified.
Why is paper burning a chemical reaction?
Burning is a sign of a chemical change
