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1、It is hard to think of a world without metalsIt is hard to think of a world without metals. Different metals have different uses, for example, steel is used in cars, and iron is used in e_ equipment. When we use metals, it is important to know how they react with different substance, for example, wa
2、ter and oxygen. The reaction of metals with these substances can be put in order. Here is a table with the metals that react most at the top, and the metals that react least at the bottom. Metal Potassium Sodium Calcium Magnesium Aluminum Zine Iron Copper Heated in oxygen Reaction with water and steam Reacting with cold water Burns to form an oxide* Reacting with steam Reacts slowly Partial reaction Partial reaction No reaction
