Write any two differences between mixture and compound and give examples
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An element contains only atoms with the same number of protons, and hence the same atomic number (although they may have different mass numbers, and should not be referred to as 'identical').
A compound contains atoms of two or more different elements that are chemically combined to form a substance whose physical and chemical properties are different from those of the constituent elements, although determined by them.
A mixture contains multiple elements or compounds that are mixed together but not chemically bonded. The components can be separated by physical means.
The elements sodium and chlorine can react to form the compound sodium chloride (salt). If sodium chloride is dissolved in water, the solution is a mixture. The two substances that were mixed can be separated by crystallisation (if you are most interested in the salt) or by distillation (if you are most interested in the water).
A compound contains atoms of two or more different elements that are chemically combined to form a substance whose physical and chemical properties are different from those of the constituent elements, although determined by them.
A mixture contains multiple elements or compounds that are mixed together but not chemically bonded. The components can be separated by physical means.
The elements sodium and chlorine can react to form the compound sodium chloride (salt). If sodium chloride is dissolved in water, the solution is a mixture. The two substances that were mixed can be separated by crystallisation (if you are most interested in the salt) or by distillation (if you are most interested in the water).
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Compounds are pure substances.
2. They are made up of two or more elements combined chemically.
3. The constituents of a compound are present in a fixed ratio.
4. Compounds have fixed properties. For example, a particular compound will have fixed temperatures at which it melts and boils.
5. A compound can have properties different from its constituents, as a new substance is formed when the constituents are chemically combined.
6. The constituents of a compound can be separated only by chemical methods.
Mixtures
1. Mixtures are impure substances.
2. They are made up of two or more substances mixed physically.
3. The constituents of a mixture are present in varying ratios.
4. Mixtures do not have fixed properties. Their properties depend on the nature of their components and the ratios in which they are combined.
5. In mixtures, no new substance is formed. The properties of a mixture are the same as the properties of its constituents.
example compounds water
example of mixture
2. They are made up of two or more elements combined chemically.
3. The constituents of a compound are present in a fixed ratio.
4. Compounds have fixed properties. For example, a particular compound will have fixed temperatures at which it melts and boils.
5. A compound can have properties different from its constituents, as a new substance is formed when the constituents are chemically combined.
6. The constituents of a compound can be separated only by chemical methods.
Mixtures
1. Mixtures are impure substances.
2. They are made up of two or more substances mixed physically.
3. The constituents of a mixture are present in varying ratios.
4. Mixtures do not have fixed properties. Their properties depend on the nature of their components and the ratios in which they are combined.
5. In mixtures, no new substance is formed. The properties of a mixture are the same as the properties of its constituents.
example compounds water
example of mixture
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