ICSE Class 6 Answered

DEFINITION OF:-

OXYGEN: A colourless, odourless reactive gas, with atomic number 8 & the chemical symbol 'O' and is a non-metal.

IRON: A strong, hard magnetic silvery-grey metal, with atomic number 26 and 'Fe' as a chemical symbol.

LEAD: It is a metal has the chemical symbol 'Pb', and atomic number 82

ZINC: It is a silvery-white metal has the chemical symbol 'Zn', and atomic number 30

IODINE: A non-metallic element forming black crystals and a violet colour vapour has atomic number 53 and chemical symbol is 'I'.

ATOM: An atom is the smallest component of an element.

METALLOIDS: It is the type of element which possesses properties of both metals and non-metals.

 BRONZE: It is an alloy made up of copper and tin.

COTTON: A soft white fibrous substance which surrounds the seeds of the cotton plant and is made into textile fiber and thread for sewing.

CALCIUM: A soft grey metal has the chemical symbol 'Ca', and atomic number 20.

RESIDUE: It is the material remaining after a process of preparation, separation or purification such as distillation, evaporation or filtration. It may also denote the undesirable by-product of the chemical reaction.