What Are These Two Things In Chemistry?

_______ are usually cheap and _______ are much costlier.

_______ covalent bond has electrical poles, and _________ covalent bond does not have electrical poles.

The rate of reaction in ____ is unimolecular, while ______ is bimolecular.

______ change is a permanent change, while ______ is a temporary change.

______ is the combination of two or more atoms, and ______ is the smallest particle of an element.

_______ is used in fertilizers and explosives, while ________ is used in food preservatives.

______ is derived from alcohol, ______ is derived from carboxylic acids.

______ can be primarily found in plants, while _____ can be found in processed food.

________ is a poor acid compared with water, while ________ is higher acidic than water.

________ is also called Lewis acid; ________ is also called Lewis base.

________ can be homogeneous mixtures and heterogeneous mixtures; A ________ is a type of homogeneous mixture.

________ are designed for plants, while __________ are designed to kill all types of unwanted elements.

_______ was derived in the 12th century while _______ in the 19th century.

_______ are known to be less acidic, and ______ are relatively more acidic in nature.

________ means losing electrons; ________ means gaining electrons.

Zinc hydroxide is an example of _______. Sodium hydroxide is an example of _______.

_______ is not a state of matter, unlike _______.

_______ produces less fat while ________ produces more fat.

The process of _________ is slow; The process of __________ is much quicker.

______ are solid at room temperature. Oils are liquid at room temperature.