EVERYDAY SCIENCE

Detailed explanation-1: -Elements are pure substances that make up matter, so each one is given a unique name. The names of elements are also represented by unique one-or two-letter symbols, such as H for hydrogen, C for carbon, or He for helium.

Detailed explanation-2: -The correct answer is a unique chemical symbol. An element is a naturally occurring pure substance made up of the same type of atoms.

Detailed explanation-3: -A chemical symbol is a shorthand method of representing an element. Instead of writing out the name of an element, we represent an element name with one or two letters. As you know, the periodic table is a chemist’s easy reference guide.

Detailed explanation-4: -Each element has its own unique properties. Each contains a different number of protons and neutrons, giving it its own atomic number and mass number. The atomic number of an element is equal to the number of protons that element contains.

Detailed explanation-5: -Official element names and symbols are determined by the International Union of Pure and Applied Chemistry (IUPAC). However, elements often have common names and symbols in various countries. Elements don’t gain official names and symbols until after their discovery has been verified.