Chemical change is when the composition of your elements or solution change. In a simple way to say it, it's when you no longer have the same elements or solution that you started with.
You can determine if a reaction is chemical, by observing the chemical properties. Usually it's when there's a color change, a new substance formed, etc..
On the other hand, physical change is when the composition of your substance stay the same, but the physical properties change. For example, liquid water evaporate into H2O gas.
If the property can be observed without changing the chemical composition of the substance, then it is a physical property. If the property can be observed only through a chemical reaction, then it is a chemical property.
Chemical reaction
If the property can be observed without changing the chemical composition of the substance, then it is a physical property. If the property can be observed only through a chemical reaction, then it is a chemical property.
Combustion is a chemical reaction.
No. A chemical reaction is not alive.
A chemical reaction is a graphical representation of a chemical reaction.
A new chemical substance is formed during a chemical reaction by rearranging the atoms of the reactants. The products of a chemical reaction have different properties compared to the original reactants.
A chemical reaction is represented by a chemical equation.
A chemical reaction can be represented by a chemical equation.
The reaction must change the chemical nature of reactants.
a chemical reaction is a reaction were the two chemicals change into a new chemical.
yes, it is a chemical reaction