list 3 points. of difference between compounds and mixtures
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Compound
- 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
- example of substance Methane, salt, baking soda, etc.
Mixture
- 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
- example of mixture Brass, chromium, bismuth, etc
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