Question

Vinegar is composed of approximately 5% acetic acid and 95% water. Which one of the following is the best classification of vinegar?A. pure substance B. element C. compound D. mixture

Answer 1

Answer: D. MIXTURE

Explanation:

It’s important, you first understand the meaning of a pure substance, an element, a compound and a mixture.

A pure substance is a material with a particular composition and consists of only one type of atom or compound. An example is pure sugar.

An element is a substance that cannot be broken down chemically and elements have just one symbol from the periodic table such as Carbon (C), Hydrogen (H).

A compound consists of two or more elements that are bonded chemically. For example, ammonia is a compound with a chemical formula NH3 which means it is means it is made up of 3 moles of Hydrogen and 1 mole of nitrogen.

A mixture contains two or more elements or compounds that are not bonded chemically. It can homogenous or heterogeneous. Examples are salt solution, sand, vinegar.

Vinegar is a mixture of two compounds water and acetic acid and can be separated by physical means because no chemical bond exists between water and acetic acid.