Define element, compound and mixture. What are homogeneous and heterogeneous mixtures? Give two differences between homogeneous and heterogeneous mixtures.
Define element, compound and mixture. What are homogeneous and heterogeneous mixtures? Give two differences between homogeneous and heterogeneous mixtures.
Definitions of the element, compound and mixture is as follows:
Element: An element is a pure substance that cannot be split into simpler substances.
- It is made up of only one type of atoms.
- Example: Hydrogen , Copper etc.
Compound: A compound is a pure substance in which elements combine chemically in a fixed composition to give a compound.
- They can be broken down into elements that make up the compound by using chemical or electrochemical methods.
- The properties of the compound are entirely different from the elements from which it is formed.
- Example: Water , Common salt i.e.; Sodium chloride
Element and compound are considered as pure substances because they are constituted of only one type of particles (i.e.; atoms or molecules)
Mixture: When two or more substances (elements or compounds or an element and compound) are mixed in any proportion.
- The components of a mixture can be separated by physical methods of separation.
- Example: A mixture of Sand and Iron can be separated by the use of a magnet (physical process) where Iron gets attracted to the magnet leaving behind sand.
Homogeneous mixture: Any mixture which is made up of two or more substances that exhibits uniformity in its composition and properties throughout its mass is known as a homogeneous mixture.
Heterogeneous mixture: Any mixture which is made up of two or more substances that does not exhibit uniformity in its composition and properties throughout its mass is known as a heterogeneous mixture.
Homogeneous mixture
Heterogeneous mixture
1. A homogeneous mixture has a uniform composition and properties throughout the mixture. 1. A heterogeneous mixture has a non-uniform composition and properties throughout the mixture. 2. No distinct boundary of separation can be seen between the components in a homogeneous mixture. 2. A distinct boundary of separation can be seen between the components of a heterogeneous mixture. 3. Example: A solution of salt and water, tea etc. 3. Example: Muddy water, Sand and Iron nails combined together.
Definitions of the element, compound and mixture is as follows:
Element: An element is a pure substance that cannot be split into simpler substances.
- It is made up of only one type of atoms.
- Example: Hydrogen , Copper etc.
Compound: A compound is a pure substance in which elements combine chemically in a fixed composition to give a compound.
- They can be broken down into elements that make up the compound by using chemical or electrochemical methods.
- The properties of the compound are entirely different from the elements from which it is formed.
- Example: Water , Common salt i.e.; Sodium chloride
Element and compound are considered as pure substances because they are constituted of only one type of particles (i.e.; atoms or molecules)
Mixture: When two or more substances (elements or compounds or an element and compound) are mixed in any proportion.
- The components of a mixture can be separated by physical methods of separation.
- Example: A mixture of Sand and Iron can be separated by the use of a magnet (physical process) where Iron gets attracted to the magnet leaving behind sand.
Homogeneous mixture: Any mixture which is made up of two or more substances that exhibits uniformity in its composition and properties throughout its mass is known as a homogeneous mixture.
Heterogeneous mixture: Any mixture which is made up of two or more substances that does not exhibit uniformity in its composition and properties throughout its mass is known as a heterogeneous mixture.
Homogeneous mixture | Heterogeneous mixture |
| 1. A homogeneous mixture has a uniform composition and properties throughout the mixture. | 1. A heterogeneous mixture has a non-uniform composition and properties throughout the mixture. |
| 2. No distinct boundary of separation can be seen between the components in a homogeneous mixture. | 2. A distinct boundary of separation can be seen between the components of a heterogeneous mixture. |
| 3. Example: A solution of salt and water, tea etc. | 3. Example: Muddy water, Sand and Iron nails combined together. |
