Physical And Chemical Change
Physical change - is the change of substance that is temporary while the structure doesn’t change, but the shape changes. - a physical change is reversible process and doesn’t create a new matter Chemical change - is the change of structure that is permanent and also the structure and the shape changes. - a chemical change is irreversible process and create a new matter Some example about the matter change ! Water heats, paper burns, ice melting, melting, cooling, freezing, boiling, vaporizing, sublimating, condensing, burning, corroding, iron covered with paint , rusty iron, vaporized gasoline , frozen water, rotten garbage, exploded firecrackers, burned kerosene. Chemical reaction - Can be identified based on the change happening in the reaction - Some changes can be in the form: v Precipitation/sediment v Color changes v Gas production v Temperature