1)When sulphur burns in air,it combines with the oxygen of air to form sulphur dioxide (acidic oxide) S (s) + O 2 (g) ——> SO 2 (g) Sulphur dioxide dissolves in water to form sulphurous acid solution D) There is no effect; a catalyst is needed. Explain with suitable examples the chemical properties of non-metals. Certain metals react with oxygen to form metallic oxides. For example, They form negative ions and are good oxidising agents. Some metals will react with oxygen when they burn. reactions because the metal gains oxygen. Oxygen can be removed from metal oxides in chemical reactions. Steel is an alloy made mostly of iron. They turn blue litmus to red. Reaction with oxygen: Metal oxides are produced when metals burn in the presence of oxygen. a)When a metal reacts with oxygen, a metal oxide forms. Answer: Reaction with oxygen: Non-metals react with oxygen to form acidic oxides. These reactions are called combustion reactions. Response: The more active a metal is, the more readily it reacts with oxygen. Non-metals react with oxygen to form non-metal oxides.Non-metal oxides are acidic in nature.They turn blue litmus to red. The general equation for this reaction is: metal + oxygen → metal oxide. The reactions are oxidation. Reaction of Non-Metals with Oxygen Non Metals react with oxygen to Produce Non Metal Oxide It is acidic in nature Example Note- Why is Phosphorus not kept in open? Two examples of combustion reactions are: Iron reacts with oxygen to form iron oxide: 4 Fe + 3 O 2 → 2 Fe 2 O 3 A) Less reaction will take place. This method can be used to compare different metals and their reactivity with oxygen by observing the reaction. For example: When magnesium strip is burned in the presence of oxygen it forms magnesium oxide and when magnesium oxide dissolves in water it forms magnesium hydroxide. These salts have a basic behavior, hence their name. Phosphorus is a very reactive non metal.If it is kept in open air it will react with oxygen and catch fire. Reaction with water: Non-metals do not react with water. Metals that react with oxygen produce oxides as their products. The general equation for this reaction is: metal + oxygen → metal oxide. C) The reaction mixture will catch fire. But most of them do this on ignition. Non-metal oxides are acidic in nature. Rust is a form of iron oxide and it forms slowly when iron is exposed to air. Iron metal reacts with oxygen gas to produce iron(III) oxide. B) More iron oxide will be produced. According to this behavior, they react with acids in typical acid-base reactions to produce salts and water, for example: b)Non-metals react with oxygen to form non-metal oxides. In this lesson, we will discuss how certain metals react with the oxygen in the air to form new compounds resulting in a change in mass. 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