differentiate between physical and chemical change
Answers
Answer:
Physical change is a change in matter that involves the substance going from one physical state to another. The reference to a physical state involves solids, liquids, and gases. When a substance undergoes a physical change it does not lose its original properties when changing from one phase to another.Chemical change is a process where one or more substances are altered into one or more new and different substances. Thus, Chemical change is a chemical reaction involving the rearrangement of atoms. When a chemical change occurs, there is also a change in the energy of the system. A chemical change that gives off heat is called an exothermic reaction. One that absorbs heat is called an endothermic reaction.
Answer:
Explanation:
Physical changes the changes you can observe like change in shape ,size ,thickness ,cutting, bending, dissolving, freezing, boiling etc....
example: melting of ice
chemical changes are the changes which occur in its property like burning of wood ,milk to curd,Burning wood, Souring milk, Mixing acid and base, Digesting food, Cooking an egg, Heating sugar to form caramel, Baking a cake, Rusting of iron etcccc......