Questions

A magnifying glass is a convex lens that is used to produce a magnified image of an object. It is also called a hand lens in laboratory contexts.

In computing, ".bak" is a filename extension commonly used to signify a backup copy of a file.

Though not the largest producer, Burma is an important exporter of rice because production exceeds demand.

Mitochondria are present in both plant and animal cells.

Electronegativity refers to the ability of an atom to attract shared electrons in a covalent bond. The higher the value of the electronegativity, the more strongly that element attracts the shared electrons.

Electronegativity increases from bottom to top in groups, and increases from left to right across periods. Thus, fluorine is the most electronegative element and lithium is the least.