chemical change-Gold is unaffected by air, water, alkalis and all acids except aqua regia (a mixture of hydrochloric acid and nitric acid) which can dissolve gold. Gold does react with halogens.
chemical property-It has a melting point of 1,677°C (3,051°F) and a boiling point of 3,277°C (5,931°F). Its density is 4.6 grams per cubic centimeter. Titanium metal is brittle when cold and can break apart easily at room temperature. At higher temperatures, it becomes malleable and ductile.
physical change-It is a metaloid and is a powder or a metal-like substance.
physical property-Melting point-249° CBoiling point-246.7° CDensity0.0009 g/cm³AppearanceNeon is colorless.Other physical properties Neon glows when a high electrical voltage is passed through it.
chemical change- Instead, it sublimes. Sublimation is the process by which a solid turns directly to a gas without first melting. The resulting iodine vapor has a violet color and a harsh odor. If a cold object, such as an iron bar, is placed in these vapors, iodine changes back to a solid.
chemical property- Th density of magnesium is 1.738 g/mL, which means the metal will sink in water, but it is still relatively light weight. Chemical Properties: Magnesium is a silvery white metal. The surface of magnesium metal is covered with a thin layer of oxide that helps protect the metal from attack by air.
physical change-Uranium is a silvery, shiny metal that is both ductile and malleable. Ductile means capable of being drawn into thin wires. Malleable means capable of being hammered into thin sheets. Its melting point is 1,132.3°C (2,070.1°F) and its boiling point is about 3,818°C (6,904°F).
physical property-An important physical property of copper is the element's color—reddish-brown. An important chemical property is the way copper reacts with oxygen. It turns the reddish-brown tint green. This change of color is a result of the copper combining with water and carbon dioxide in moist air.
chemical change-The rusting of iron is a chemical change because it is two substances reacting together to make a new substance. When iron rusts, iron molecules react with oxygen molecules to make a compound called iron oxide. Rusting would only be a physical change if iron molecules remained pure iron throughout the process
chemical property - Chemical properties. In many of its properties, lithiumexhibits the same characteristics as do the more common alkali metals sodium and potassium. Thus, lithium, which floats on water, is highly reactive with it and forms strong hydroxide solutions, yielding lithium hydroxide (LiOH) and hydrogen gas.