5. Explain the difference,
(a) Metals and non-metals
(b) Mixtures and compounds
(c) Atoms and molecules
(d) Separation by distillation and by
separating funnel
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5. Explain the difference,
(a) Metals and non-metals
(b) Mixtures and compounds
(c) Atoms and molecules
(d) Separation by distillation and by
separating funnel
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Answer:
1)Metals shows the property of malleability while non-metals are non-malleable. Metals are generally those substances that have a shiny surface and thus are lustrous. Whereas non-metals have non-shiny appearance and thus falls under the category of non-lustrous substances.
2)Compound are substances which can be formed by chemically combining two or more elements. Mixtures are substances that are formed by physically mixing two or more substances.
3)A molecule is made up of atoms bonded together. So, while an atom is its own separate entity, a molecule is what you get when those atoms bond together. These might be the same elements, such as two oxygen atoms bonded together (O2), or it might be different atoms bonded together like water (H2O).
4)Separation by distillation Separation by separating funnel
Separation by distillation Separation by separating funnel2. It is based on the difference points of two liquids. 2. It is based on the difference in the densities of the two liquids
Answer:
Metals
Good conductors of heat and electricity
Malleable: can be beaten into thin sheets
Ductile: can be stretched into wire
Possess metallic luster
Solid at room temperature (except Hg)
Non-Metals
Poor conductors of heat & electricity
Brittle: if solid
Non-ductile
Do not possess metallic luster
Solids, liquids or gases at room temperature
Compound
1. The composition of elements present in a compound is fixed.
2 The properties of a compound are different from those of its elements.
3. Its constituents can be separated by chemical methods only.
4. A compound is always homogeneous in nature.
Mixture
The composition of elements present in a mixture is not fixed.
It shows the properties of all its constituent elements.
Its constituents can be separated by physical methods.
The mixtures can be homogeneous or
heterogeneous.