EVERYDAY SCIENCE

Detailed explanation-1: -Minerals are naturally occurring inorganic solids, obtained from Earth’s crust by mining. They contain elements either in a free state or in the form of compounds. They are mixed with impurities like sand, clay stones, etc.

Detailed explanation-2: -Oxygen, silicon, aluminum, and iron account for 88.1% of the mass of the Earth’s crust, while another 90 elements make up the remaining 11.9%. While gold, silver, copper and other base and precious metals are among the most sought after elements, together they make up less than 0.03% of the Earth’s crust by mass.

Detailed explanation-3: -Assertion :Minerals are naturally occurring chemical substances in the earth’s crust obtainable by mining. Reason: Minerals are also known as ores.

Detailed explanation-4: -Feldspars are the most abundant mineral group on Earth and make up nearly 60% of Earth’s crust. Feldspars are used in glassmaking, ceramics, as fillers in paints, and in plastics and rubber. Hematite is the principal ore of iron.

Detailed explanation-5: -You should learn the symbols for the eight most abundant elements in the Earth’s crust (Oxygen (O), Silicon (Si), Aluminum (Al), Calcium (Ca), Iron (Fe), Magnesium (Mg), Sodium (Na), and Potassium (K) .