Differentiate between mixtures and compounds?
in points
Answers
Answer:
Difference Between Compound and Mixture
Basis
Compound
Mixture
Definition
A compound is the substances that are formed by combining two are more chemical elements.
A mixture is a substance created from two or more matter that can be separate with the help of physical methods.
Nature
Compound substances are always homogeneous in nature.
Nature of Mixture substances can either be homogeneous or heterogeneous.
Examples
Water (H₂O), Sodium Chloride (NaCl), Sodium Bicarbonate (NaHCO₃), salt, sugar, and baking soda are some of the examples of compound substance.
A mixture of oil and water, sand and soil, sulphur and iron filings, smoke and fog (smog) etc are some examples.
Types
Compounds are of three types i.e. covalent compounds, a metallic compound, and ionic compounds. Moreover, compounds can also be classified as organic or inorganic compounds based on the presence of the carbon atom.
There are two main types of mixture i.e. homogeneous and heterogeneous.
Substance category
Mainly pure water is part of the compound.
Mixtures fall under impure water.
Separation of constitution
The only methods that can be separate constituents of compounds are chemical and electrochemical (like extraction).
The constituents of a mixture can easily be separated by physical (like filtration) method.
Composition
The ratio of the elements in compounds is always fixed. They contain only one type of molecule. Also, the elements chemically combined.
Whereas, a mixture can have a variable composition of substance in forming but the ratio is not fixed nor they are combined via chemical bonds.
Representation
A compound is represented using its chemical formula.
A mixture cannot be represented by using formula.
Properties
In a compound, the properties are peculiar to itself as the constituents of a compound lose their original properties
The constituents of a mixture do not lose their property. So, the mixture properties are generally a sum of the properties of its constituents.
New substance
When two or more constituents are chemically combined, they together formed a new substance.
No new substance is formed in mixtures and its properties depend upon the properties of its constituents.
Melting and boiling point
The melting and boiling point of a compound is defined.
No melting and boiling point is defined in a mixture.
Mass ratio
A compound is depending upon specific ratio.
Mixtures have a variable mass ratio depending upon the number of ingredients.
Explanation:
Compounds:
- A compound is a pure form comprising of two or more elements in a chemical combination.
- The presence of elements in compounds is in a definite quantity.
- A compound certainly has a specific formula on the basis of its constituents.
- The properties of a specific type of compound are definite and there is no variation in them.
- The formation of new substances always results in a compound because of the mixing of properties of the various elements.
- The elements of a compound are not easy to separate by physical methods.
- There is a change of heat during the formation of a particular compound
- Compounds have an unchangeable definite melting or boiling point.
- Methane, salt, baking soda, etc are examples.
Mixtures:
- A mixture is an impure substance involving two or more substances that are physically mixed.
- The presence of substances in mixtures is not in a definite quantity
- Mixtures are devoid of a chemical formula.
- The properties of a mixture tend to vary due to their dependence on the type of substances present.
- Formation of new substances does not take place from the mixtures because the properties of its constituents are not changeable.
- The substances of a mixture are certainly easier to separate by various physical methods like chromatography, evaporation, filtration, etc
- There is no heat change in mixtures when their formation takes place.
- Mixtures lack a definite melting or boiling point.
- Brass, chromium, bismuth, etc.
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