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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.
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.
A change in color when two solutions are mixed together is a clue that what has taken place?
A change in the color of a solution is a sign thatthere is a chemical change happening. A chemical change happens when two substances combine forming another substance. It can also happen when two or more substances decompose.
When a flower goes brown is it a chemical or physical change?
The browning of a flower is a chemical change. Color changes are one sign of a chemical reaction.
What is the significance of the sign of enthalpy change in chemical reactions?
The sign of the enthalpy change in a chemical reaction indicates whether the reaction is exothermic (negative sign) or endothermic (positive sign). This is important because it tells us if heat is being released or absorbed during the reaction, which can affect the overall energy balance of the system.
Is changing of color a sign of chemical change?
The change of color may be a sign of a chemical reaction.
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.
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.
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
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
How chemical change that garbage undergoes?
garbage rotting is a chemical change because the odour becomes different which is considered a sign of chemical change.
Is baking a physical or chemical change?
pretty sure its a chemical change.
What is a sign of a chemical change but isn't reliable?
smell
What is a sign that a chemical change has occurred smoke broken pieces change in shape or change in state?
The production of smoke from something burning would be a sign of a chemical change. Broken pieces, change in shape, or change in state are all physical changes.
