Question

Beating aluminium to make Aluminium foil is a physical or chemical change?

Answer 1

Hint : Energy changes are always accompanied by a specific chemical or physical change. Many changes occur in a natural environment, such as water evaporation, condensation, rainfall, and so on. All of these changes involve a state change. During a reaction, the old bonds in the reactants are broken and new bonds are formed in the products.

Complete Step By Step Answer:
Chemical Changes:
-A chemical change is defined as a change in which the molecular composition is completely altered and a new product is formed.
-A new product is created as a result of chemical changes.
-Chemical transformations are irreversible and permanent.
-It demonstrates that chemical change cannot be reversed by altering or changing the experimental changes.
-During a chemical change, the mass of the substance changes.
-During a chemical change, the mass of the substance changes.
Ex: Wood or paper burning, Camphor combustion, Milk fermentation, Candle lighting, Food digestion
Physical changes:
-The arrangement of molecules is altered during the physical change, resulting in a state change. There are no new products formed, and the molecular composition remains unchanged. The molecular composition of ice and water, for example, remains unchanged.
-There are no energy changes as a result of a physical change. The amount of energy required to bring about a physical change is equal to the amount of energy required to reverse the change. There is no change in energy.
-The modifications are reversible and only temporary. If the cause of the change is removed, the reaction is reversed. For example, water freezes to form ice, and ice melts to form water.
Ex: Sugar dissolution in water, Icing melting, Water freezing, Water is being boiled., Wax meltdown
Beating aluminium metal to make aluminium foil is a physical change because people can develop their products or aluminium foils with the aluminium sheets during the beating, moulding, heat pressing, and fabrication process. Physical change is defined as a change in matter that does not alter the chemical properties of the matter.
Thus, Beating aluminium to make Aluminium foil is a physical change.

Note :
Energy changes occur during chemical reactions. The breaking of old bonds in reactants and the formation of new bonds in products require different amounts of energy. When energy is released, the reaction is called an exothermic reaction; when energy is absorbed, it is called an endothermic reaction. The mass of the substance remains constant during the physical change. Only energy is added or removed in a physical change, and mass is not involved.