Chemistry Questions and Answers

Primary cells are non-rechargeable batteries, and the alkaline battery is a common example of a primary cell

Rusting is the corrosion of iron or steel due to exposure to oxygen and moisture in the air, resulting in the formation of iron oxide (Fe$_2$O$_3$ or Fe$_3$O$_4$), which is an example of an acidic oxide.

Chlorine gas is used in the production of chlorofluorocarbons (CFCs), which were once widely used as refrigerants, aerosol propellants, and foam-blowing agents. However, due to their harmful impact on the ozone layer, their use has been significantly reduced.

Temperature must be expressed in Kelvin when using the ideal gas law. The Kelvin scale is an absolute temperature scale, and its zero point (0 K) corresponds to absolute zero, the point at which the kinetic energy of gas particles is minimal.

Fluorine is a halogen that is a gas at room temperature and is pale yellow in color. Halogens are a group in the periodic table consisting of five chemically related elements: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At). Among these, only Fluorine and Chlorine are gases at room temperature, but Chlorine is greenish-yellow, not pale yellow.