common compounds elements

>) and potassium nitrite (KNO 2 ), carbon dioxide (CO 2 ) and carbon monoxide (CO). The properties of compounds are absolutely different from the properties of the elements that constitute the compound. For instance, hydrogen is combustible and oxygen is a supporter of..

. For instance, hydrogen is combustible and oxygen is a supporter of combustion. But their product, water, neither burns, nor helps in burning. It actually extinguishes fire. Another familiar example is that of sodium and chlorine. Sodium is a violently reactive metal while chlorine is a highly poi..

. Metalloids are the elements, which have properties that lie between those of metals and non-metals, e.g., arsenic, antimony, etc. Molecules of elements may consist of single atom, two atoms, or even more. All the hundreds of thousands of compounds existing, and produ..

Summary - Pure substances are made up of only one type of constituent particles. They are homogenous and have a definite set of properties characteristic of themselves. An element is a pure substance that is made up of only one kind of atoms. An atom is the smallest particle of an el..

According to the chemical classification of matter there are two main categories: Pure substances Mixtur..

All matter can be broadly divided into two major groups "Pure" and "Impure". The term 'purity' has quite a different meaning in chemistry than in our day-to-day life. Normally when we refer to pure water, pure milk, etc., what is implied is that the water, milk etc., are free from harmful sub..

a) Oxygen and water (air dissolved in water) b) Oxygen, nitrogen, carbon dioxide and water vapour (air). Mixtures can also be grouped on the basis of their physical state..

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According to the chemical classification of matter there are two main categories: (i) Pure substances (ii) Mixture..

It is a pure substance that can be decomposed into simpler substances by some suitable chemical technique. A compound is formed by combination of two or more elements in a definite proportion. For example, water is a compound of hydrogen and oxygen elements ..