The following Topics and Sub-Topics are covered in this chapter and are available on MSVgo:
Elements are the primary chemical substances of which all atoms are precisely the same. Compounds are chemical compounds consisting of two or more chemically bonded elements in a fixed ratio. When two or more compounds combine without chemical alteration, the resultant compound is a Mixture in chemistry.
When two or more elements are chemically combined in a fixed mass ratio, the result is known as a compound. Compounds are substances consisting of two or more distinct types of elements in their atoms’ fixed ratio. When the elements are combined, specific individual properties are missing, and the newly created compound has new properties.
Chemical formula: The chemical formula describes the compounds. The chemical formula is a symbolic description of the quantities of atoms that compose a chemical complex. Water’s chemical formula is H2O, which indicates that two hydrogen atoms and one oxygen atom fused to form one H2O molecule.
Types of Compounds: Compounds are divided into two groups, molecular compounds and salts. In molecular products, the molecule is bound by covalent bonds. It is preserved in salts along with ion bonds. These are the two forms of bonds from which each compound is formed.
Examples of Compounds: Examples of compounds include hydrogen peroxide (H2O2), water (H2O), etc. You could see the water’s chemical composition, which states it has two atoms of hydrogen mixed with one atom of oxygen and two atoms of hydrogen peroxide, and two atoms of oxygen. Similarly, table salt (NaCl) with one sodium atom and one chlorine atom would be an example of salt.
An element is a kind of atom having a similar number of protons in its atomic nucleus. An element’s atoms can have different neutron numbers, but they have the same number of protons, and therefore specific masses.
Isotopes: When atoms of the same component have differing neutron ratios, they are known as isotopes. There are 118 elements, the first 94 of which are naturally occurring, and the other 24 are synthetic elements.
Elements are complete chemical elements that belong to a single entry in the current periodic table. Items consist of only one kind of particle. They cannot be broken down into smaller pieces, and they will exist either as electrons or as atoms or as molecules. Elements are represented by symbols assigned to the IUPAC. E.g., oxygen is O; aluminium is Al, etc.
The product of the synthesis of compounds does not lose its uniqueness, nor are they chemically mixed. A mixture is a final result of mechanically combining or separating chemical components such as elements and compounds.
Elements are characterized by their name, symbol, atomic number, melting point, boiling point, density, and ionization energy. In the Periodic Table, elements are arranged according to their atomic number and organized according to identical chemical properties and represented by their symbols.
An element has just one kind of atom; compounds have more than one. All elements and compounds make up all substances; they vary from mixtures when different substances are mixed; however, not by atomic bonds.
These were the critical distinctions between elements, mixtures and compounds that are important not just for examinations but also for competitive examinations. Students must check more examples to know their detailed properties.