Based on the chemic composition of the substance, thing may last classified every bit elements, compounds or mixtures.
a) Elements: These are substances which cannot last reduced to simpler materials either past times physical or chemic changes.
Example of elements: Copper, silver, gilded etc.
b) Compound: H5N1 chemical compound is a kernel which contains ii or to a greater extent than elements chemically combined together
Example of compounds: Water, salt, ammonia, methane, benzene.
c) Mixture: When ii or to a greater extent than substances are combined past times physical methods inwards whatsoever proportion together with no novel substances is formed thence it is called a mixture.
Mixture is of ii types: Homogeneous together with heterogeneous. Homogeneous mixtures accept the same composition throughout. Heterogeneous mixtures accept dissimilar composition inwards dissimilar parts of the mixture.
Example of mixtures: Combination of sulphur, Fe fillings. The constituents of a mixture tin last separated past times ordinary physical methods.
Compounds vs Mixtures
Compounds:
1. It is a unmarried substance. The composition ever the same.
2. The element elements cannot last separated past times physical methods, chemic reactions are necessary.
3. The properties of a chemical compound are peculiar to itself together with are normally quite dissimilar from those of its constituents elements.
4. Compounds are fixed inwards their compositions past times majority of chemical element present.
5. Chemical combination is normally accompanied past times i or to a greater extent than of these effects.
6. The compounds accept normally abrupt together with fixed melting together with boiling point.
Mixtures:
1. It contains ii or to a greater extent than substances. The composition may vary.
2. The constituents tin last separated from i around other past times physical methods.
3. The properties of a mixture are the total of the properties of the constituents of the mixture.
4. Mixture may vary widely inwards composition.
5. Mixing is non normally accompanied past times external effects such every bit explosions, development of heat, or book modify (for gases).
6. The melting together with boiling signal are normally non abrupt together with fixed.
Learn more; Chemistry Lessons
Learn more; Chemistry Lessons
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