physical and chemical properties and changes practice

It means when we strike them, they do not make any sound. Non-metals are not lustrous which means they are not shiny. Non-metals are poor conductors of heat and electricity. Instead, they are brittle as they break down into pieces on hammering. It means they don’t possess the property of malleability. Non-metals cannot be hammered into thin sheets. Physical Properties of Non-metals: Some of the major physical properties of non-metals are given below. More variety in colour and states are displayed by the non-metals in comparison to metals.Įxamples of non-metals are chlorine, carbon, bromine, sulphur, phosphorus etc. It has a tendency to form an acid if combined with oxygen and hydrogen. The reaction is given below –Ī non-metal in chemistry can be defined as a chemical element that generally in a chemical reaction gains electrons when reacts with a metal. These types of reactions are called displacement reactions.Įxample – Iron is more reactive than copper. The reaction is given below –ĭisplacement Reaction - A more reactive metal displaces a less reactive metal from its salt solution. Reaction With Base - Metals react with bases such as sodium hydroxide and form salt and hydrogen gas.Įxample – Aluminium metal reacts with Sodium hydroxide and forms sodium aluminate and hydrogen gas. Some metals vigorously react with acids.Įxample – Magnesium metal reacts with hydrochloric acid and forms magnesium chloride and hydrogen. Reaction With Acid - Metals react with acids and form salt and hydrogen gas. When a metal reacts with water, metal hydroxide and hydrogen gas are formed.Įxample – Sodium metal reacts with water and forms sodium hydroxide and hydrogen gas. Reaction with water - Metals react with water.

The reactions are given below.Īn aqueous solution of metal oxide turns red litmus paper into blue. When we dissolve magnesium oxide in water, it gives magnesium hydroxide. Reaction with Oxygen – Metals react with oxygen and form metallic oxides which are basic in nature.Įxample –Magnesium is metal and when it reacts with oxygen, it forms magnesium oxide. Chemical Properties of Metals: Some of the chemical properties of metals are given below.It means when we strike them, they make a ringing sound. Metals are lustrous which means they have a shiny appearance. Metals are a good conductor of heat and electricity. It means they possess the property of malleability. Physical Properties of Metals: Some of the main physical properties of metals are given below. The metals are distinguished by their chemical and physical properties such as malleability, ductility, ionization and bonding properties etc.Įxamples of metals are gold, aluminium, iron and magnesium etc. In this article, we will discuss the properties of metals and non-metals and the difference between the two on the basis of their properties (with exceptions) in detail.Ī metal in chemistry is defined as an element that can easily form positive ions called cations and tends to make metallic bonds. In the following figure the periodic table is given by highlighting metals and non-metals as well as metalloids. While nonmetals are those elements that are not malleable, ductile, sonorous and are poor conductors of heat and electricity. etals are defined as elements that possess properties such as, malleability, ductility, sonorous and good conductors of heat and electricity.

We can distinguish elements into metals and non-metals on the basis of their chemical and physical properties.

Physical and chemical properties and changes practice