Chemical change would cause change in physical quality or thermal value, the most observable quality is colour. It may observed a colour change of reaction but not all reaction had observable change of colour. In that case it will need to add indicator to observe a chemical change. Type of indicator may be different base on the concerned reaction. Indicator chosen may be the type that change colour due to pH or the type that react with contents of product to change colour.
You can be sure that a chemical change has occurred if there is a change in color, formation of a precipitate, evolution of gas, or absorption/release of heat during the reaction. These are all indicative of a chemical reaction where the substances are transformed into different compounds with new chemical properties.
The fizzing of limestone when acid is added is a chemical change. This is because a chemical reaction occurs between the acid and the calcium carbonate in the limestone, resulting in the production of carbon dioxide gas.
The only sure way to prove that a chemical reaction has occurred is to demonstrate a change in the chemical composition of the substances involved. This can be done by analyzing the reactants and products using techniques such as spectroscopy, chromatography, or mass spectrometry to identify any new substances formed. Additionally, measuring physical changes such as color, temperature, gas production, or precipitate formation can also provide evidence of a chemical reaction taking place.
chemical change :-)
It is a Physical Change because i dont know but im sure that is a physical change :P
pretty sure its a chemical change.
The only sure evidence for a chemical reaction is the formation of new substances with different properties from the original reactants. This can be observed through changes in color, odor, temperature, or the production of a precipitate or gas.
Sure. A steel frame that begins to rust will be undergoing a chemical change.
i m pretty sure a colour change represents a Chemical change
I'm not sure. I think it is a chemical change.
You can be sure that a chemical change has occurred if there is a change in color, formation of a precipitate, evolution of gas, or absorption/release of heat during the reaction. These are all indicative of a chemical reaction where the substances are transformed into different compounds with new chemical properties.
i am pretty sure it is a physical property! :)
The fizzing of limestone when acid is added is a chemical change. This is because a chemical reaction occurs between the acid and the calcium carbonate in the limestone, resulting in the production of carbon dioxide gas.
A chemical change is a change in which a change of matter that produces one or more new substances is a chemical change.Unlike a physical change, a chemical change produces new substances with new and different properties. Examples of chemical changes are combustion,electrolysis, oxidation,and tarnishing, frying an egg, burning of wood, cutting a tree.
The only sure way to prove that a chemical reaction has occurred is to demonstrate a change in the chemical composition of the substances involved. This can be done by analyzing the reactants and products using techniques such as spectroscopy, chromatography, or mass spectrometry to identify any new substances formed. Additionally, measuring physical changes such as color, temperature, gas production, or precipitate formation can also provide evidence of a chemical reaction taking place.
chemical change :-)
both physical and chemical change occur