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प्रश्न
Give three differences between metals and non-metals.
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उत्तर
Metals:
1. Metals are ductile i.e. can be drawn into wires.
2. Metals are malleable i.e. can be beaten to form sheets.
3. They are sonorous.
Non-metals:
1. Non-metals are mostly soft solids that cannot be drawn into wires.
2. They are mostly gases and are not malleable.
3. They do not produce sound when struck.
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संबंधित प्रश्न
Give one example for the following types of mixtures :
misicible liquids
Name: A form of carbon used as a gem
Give one use of the following substance:
Brass
Indicate whether the following statement is true or false:
Metals can be polished.
Indicate whether the following statement is true or false:
Noble gases are high reactive
Complete the statement given below by filling in the blanks with the correct words.
From the elements – He, Br, Pt, and O; the element which is metallic is ____, an inert element is ____, forms a triatomic molecule is ____, is liquid at room temperature is_ ___.
Elements are broadly classified into metals and non-metals. State six general differences in the physical properties of metals and non-metals. State two metals and two non-metals which contradict with the general physical properties – giving reasons. State one difference in property between metalloids and noble gases.
With reference to elements – define the term ‘molecule’. Give two examples each of a monoatomic, diatomic & polyatomic molecule.
Give a reason for the following statement :
Brass & bronze are examples of mixtures, while copper sulphate & lead nitrate are examples of compounds.
Name the process associated with the following
A fine beam of light entering through a small hole in a dark room illuminates the particles in its paths.
