Question

List out the items in your house which come under pure substances and mixtures?

Answer 1

Hint: Pure substances are substances that are made up of only one kind of particles and have a fixed or constant structure. Mixtures are substances that are made up of two or more kinds of particles and do not have a constant structure.

Complete step by step solution:
Pure substance:
-In Chemistry, a pure substance is a sample of matter with both definite and constant composition and distinct chemical properties.
-All elements are mostly pure substances. A few of them include gold, copper, oxygen, chlorine, diamond, etc. Characteristics of Pure Substances:
-These substances mainly have a constant or uniform composition throughout.
-The substances have fixed boiling and melting points.
-A pure substance usually participates in a chemical reaction to form predictable products.
Examples of Pure Substances from our house:
-water, table salt, sugar and baking soda are examples of pure substances.

Mixtures:
-Mixture is impure, it consists of different kinds of elements combined physically and not chemically.
-Impure substances are also called mixtures.
-Mixtures are further divided into a homogeneous or heterogeneous mixture.
Characteristics of Mixtures or Impure Substance:
-It is formed as a result of a physical change.
-They have a variable composition.
-Their melting and boiling points differ.
Example of Mixtures from our house:
-air (a mixture of gases like oxygen, carbon dioxide, etc.)
-lemon juice (a mixture of water, sugar, common salt and lemon extract)
-sand and water

Note: Pure substances are mostly homogeneous in nature containing only one type of atoms or molecules. The mixture does not have any specific properties; the properties of the mixture are a result of the average properties of all the constituents.