Question

Copper vessel, Iron nail, and Magnesium ribbon, react with atmospheric gases to form oxides, write the chemical reactions for each of these metals​

Answer 1

Answer:This topic gives an overview of;  

Metals and Non-metals

Physical Properties of Metals and Non-metals

Chemical Properties of Metals and Non-metals

Reaction with Oxygen

Reaction with Water

Reactions with Acids

Reactions with Bases

Displacement Reactions

Uses of Metals and Non- metals

Metals and Non-metals

Metals can be distinguished from non-metals on the basis of their physical and chemical properties. Recall that lustre and hardness are physical properties.You are familiar with a number of materials like iron, aluminium, copper, etc. Some materials have been given in Table. Metals are used in making machinery, automobiles, aeroplanes, buildings, trains, satellites, gadgets, cooking utensils, water boilers, etc.

Appearance and Hardness of materials

Object /Material Appearance Hardness

Iron Shiny Very hard  

Coal Dull Not very hard

Sulphur Dull Not very hard

Aluminium Shiny Very hard

Copper Shiny Very hard

 

Physical Properties of Metals and Non-metals

Take a small iron nail, a coal piece, a piece of thick aluminium wire and a pencil lead. Beat the iron nail with a hammer. (But take care that you don’t hurt yourself in the process). Try to hit hard. Hit hard also the aluminium wire. Then repeat the same kind of treatment on the coal piece and pencil lead. Record your observations in a Table.

The shape of the iron nail and the aluminium wire changed on beating. If they were beaten harder these could be changed into sheets. Silver foil is used for decorating sweets and Aluminium foil used for wrapping food. The property of metals by which they can be beaten into thin sheets is called malleability. This is a characteristic property of metals. As you must have noticed, materials like coal and pencil lead do not show this property.

You can't hold a hot metallic pan which is without a plastic or a wooden handle.Try to list some other experiences in which a wooden or plastic handle protects you from being hurt while handling hot things. On the basis of these experiences  you say about the conduction of heat by wood and plastic. An electrician using his screw driver. What kind of handle does it have?

Explanation:

Answer 2

Answer:

Explanation

H2 +Cu----> No reaction

Fe + O2 + H2O------> FeO (OH)

Mg3 + N2----> Mg3N2

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