Classify the following as pure substances or mixtures.In the case of pure substances, classify whether they are elements or compounds but in the case of a mixture, identify whether they are homogeneous or heterogeneous.
air, milk, graphite, tap water, distilled water, brass, oxygen, steel, iron, diamond, sodium chloride, iodised table salt, silver.
Classify the following as pure substances or mixtures.In the case of pure substances, classify whether they are elements or compounds but in the case of a mixture, identify whether they are homogeneous or heterogeneous.
air, milk, graphite, tap water, distilled water, brass, oxygen, steel, iron, diamond, sodium chloride, iodised table salt, silver.
Pure substance-
- It consist of one kind of substance only.
It can be further divided in two parts:
Element - The substance which is made of same kind of substance.
example- gold
Compound- When atoms of two or elements combine chemically in a fixed proportion.
example- hydrogen and oxygen is combined to form water in a fixed proportion.
Pure substance-
Element Compound graphite sodium chloride distilled water oxygen diamond silver iron
Mixture-
- It is a substance that is formed by mixing two or more substances physically in any properties.
Types of mixture:
Homogeneous MIxture- It is one in which there is perfect mixing of the components of the mixture.
Example- Salt solution
Heterogeneous Mixture- A mixture that consists of the physically distinct part each with different properties.
Example- a mixture of sand and water.
Homogeneous Mixture Heterogeneous Mixture air brass milk iodised table salt tap water steel
Pure substance-
- It consist of one kind of substance only.
It can be further divided in two parts:
Element - The substance which is made of same kind of substance.
example- gold
Compound- When atoms of two or elements combine chemically in a fixed proportion.
example- hydrogen and oxygen is combined to form water in a fixed proportion.
Pure substance-
| Element | Compound |
| graphite | sodium chloride |
| distilled water | |
| oxygen | |
| diamond | |
| silver | |
| iron |
Mixture-
- It is a substance that is formed by mixing two or more substances physically in any properties.
Types of mixture:
Homogeneous MIxture- It is one in which there is perfect mixing of the components of the mixture.
Example- Salt solution
Heterogeneous Mixture- A mixture that consists of the physically distinct part each with different properties.
Example- a mixture of sand and water.
| Homogeneous Mixture | Heterogeneous Mixture |
| air | brass |
| milk | iodised table salt |
| tap water | steel |
