Yes, because whenever you melt something you're not changing the substance. You are changing its state from a solid to a liquid, but it's still aluminum.
When aluminum foil is added to copper chloride solution, a chemical reaction occurs where the aluminum replaces the copper in the compound to form aluminum chloride and copper metal. This is a chemical change because the composition of the substances is altered. The physical change that occurs is the color change of the solution from blue to greenish-brown due to the formation of copper metal.
Foil cut into pieces represents a physical change.
That would be a chemical property, specifically a chemical reaction. The formation of a white solid (aluminum bromide) indicates a chemical change has occurred as the aluminum has reacted with the bromine to form a new substance.
Making aluminum foil demonstrates the physical property of malleability, which is the ability of a material to be hammered or rolled into thin sheets without breaking. Aluminum foil is created by rolling aluminum ingots through a series of rollers to achieve the desired thickness.
The composition of aluminum foil is NOT 100% pure aluminum, as many people believe. You may have noticed that aluminum foil always seems dull on one side, and shiny on the other. This is caused by a naturally-occurring reaction. When Aluminum comes into contact with oxygen, the two elements undergo a spontaneous reaction: 4 Al(S) + 3 O2 (G) => 2 Al2O3 (S) The aluminum foil reacts with oxygen in the air to form a thin layer of Aluminum Oxide on one side of the foil. Because rolls of aluminum foil are generally rolled tightly, the inner side of the aluminum foil is not exposed to the air as much, and it remains shiny. In short, the composition of aluminum foil is pure aluminum (Al) AND aluminum oxide (AL2O3). (And don't worry-- the layer of aluminum oxide on aluminum foil is completely harmless. We've been using foil to cover food for years, after all.)
Physical. It's still aluminum foil.
Physical. It's still aluminum foil.
Tearing a piece of tin foil is a physical change because the substance's chemical composition remains the same before and after tearing. The appearance and physical structure of the tin foil may change, but no new substances are formed during the tearing process.
Cutting aluminum foil in half is a physical change. A physical change alters the form of a substance without changing its chemical composition. In this case, the aluminum foil remains aluminum foil after being cut in half, just in two smaller pieces. No new substances are formed during this process, so it is considered a physical change.
When aluminum foil is added to copper chloride solution, a chemical reaction occurs where the aluminum replaces the copper in the compound to form aluminum chloride and copper metal. This is a chemical change because the composition of the substances is altered. The physical change that occurs is the color change of the solution from blue to greenish-brown due to the formation of copper metal.
Foil cut into pieces represents a physical change.
Beating aluminum to make aluminum foil is a physicalchange, and not a chemical one. Note, however, that aluminum is generally rolled to make foil rather than beaten. The ductility of aluminum is a physical characteristic of this amazing metal that makes it possible for us to do that.
A chemical change occurs. When aluminum foil is placed in liquid bromine, the aluminum reacts with bromine to form aluminum bromide, which appears as a white solid. This reaction is a chemical change because the composition of the substances involved is altered.
Aluminum foil does not contain BPA. BPA is a chemical compound that is used in some plastics, but it is not present in aluminum foil.
Iron rusting = chemical gasoline burning = chemical cutting a piece of wood = physical aluminum reacting with foil paper= chemical Anytime the basic molecule is changed, it is chemical, and if it is not than it is physical. Keep in mind that basic state changes (e.g. melting from solid to liquid) are physical.
When copper chloride reacts with aluminum foil, a chemical change occurs. This reaction results in the formation of copper metal and aluminum chloride. The color change (from blue to brown/red) and the formation of a solid precipitate are indicators of a chemical reaction taking place.
Thickness is a physical property without any relation with chemical composition or chemical changes.