What is Element ? Definition of Element
Substance which consists of only one type of atom is known as element.
So we can say that, an element is a substance which is made up entirely from the one type of atom.
Example of Element
Hydrogen, Carbon, Oxygen, Nitrogen, Chlorine, Iron, Copper, Gold, Silver.
Element Carbon is made from atoms containing six protons, six neutrons and six electrons. Symbol of element carbon is ‘C’. Atomic Number of element carbon is 6. Atomic Mass of element carbon is 12.0107 amu. Melting Point of element carbon is 3500.0 °C (3773.15 K, 6332.0 °F). Boiling Point of element carbon is 4827.0 °C (5100.15 K, 8720.6 °F). Element Carbon is classified as Non-metal. Crystal Structure of element carbon is Hexagonal. Density @ 293 K of element carbon is 2.62 g/cm3. Color of element carbon is generally black.
If you wish to change the number of protons in an atom than ultimately you change the type of element.
Question : What is element in Science ?
Answer : Substance that consists of only one type of atom.
Molecule has two different atoms.
Elements contain one or more of the same type of atom!
Elements Example-
• Hydrogen – 1 proton per atom
• Carbon – 6 protons per atom
• Oxygen – 8 protons per atom
• Copper – 29 protons per atom
• Gold – 79 protons per atom
Labeling of Element in Periodic Table
2 - Proton Number- it shows what element it is. (Atomic Number)
He - Name of the Element
4 - Total Atomic Weight- Number of Protons + Number of Neutrons.
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