Chemical properties of gold

Is the fact that gold is impervious to attack by hydrochloric acid a physical or chemical property of gold ... 

The physical and chemical properties of gold make it special. First, its intrinsic beauty and rarity make it precious. Second, it is soft and can be easily formed into jewelry, coins, and other objects. Third, it is one of the least active metals (Table 4.5). It is not oxidized in air and does not react with water (T FIGURE 4.15), with basic solutions, or with most acidic solutions. 

The results in Fig. 6.12 illustrate the tremendous impact that an optimization of the chemical properties of gold and ceria can have on the activity of a WGS catalyst - CeOyPt(lll) is also an excellent support for Cu and Pt nanoparticles.This has been verified in experiments with high surface area powder Pt/CeOx/TiOj catalysts which in many aspects show a behavior similar to that seen for... 

A chemical property describes the ability of a substance to combine with or change into one or more other substances. For example, the ability of iron to form rust when combined with air is a chemical property of iron. The inability of a substance to combine with another substance is also a chemical property. For example, the inability to combine with most other substances is a chemical property of gold. 

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