Name a liquid which can be classified as a pure substance and conducts electricity.

Academic Chemistry NCERT Class 9

A liquid that can be classified as a pure substance and conducts electricity is Mercury (Hg).

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Updated on: 10-Oct-2022

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Name a non-metallic element, which conducts electricity.
Elements can be classified as _________________ and _____________.
The ‘sea-water’ can be classified as a homogeneous as well as heterogeneous mixture. Comment.
Is water a pure substance?
Is a substance which can be compressed soft or hard?
Difference Between Pure Substance and Mixture
A, B and C are all liquids. Liquid A has a comparatively low boiling point. On heating, liquid A vaporises completely without leaving behind any residue. Liquid A is being used increasingly as a fuel in motor vehicles either alone or by mixing with petrol. Liquid B has a very high boiling point. It also vaporises completely on heating, without leaving any residue. Liquid B is a conductor of electricity and used in making thermometers. Liquid C has a moderate boiling point. On heating, liquid C vaporises leaving behind a white solid D which is used in cooking vegetables. The condensation of vapours from C give a liquid E which turns anhydrous CuSO4 to blue.(a) Which liquid could be an element? Name this element.(b) Which liquid could be a mixture? Name this mixture.(c) Which liquid could be a compound? Name this compound.(d) What could the solid D be?(e) What do you think is liquid E?
What are Pure Substance?
There are three substances X, Y and Z. The substance X does not have a fixed melting point or boiling point and it still shows the inpidual properties of its constituents. The substance Y is a pure substance which occurs in nature as such. The substance Y has a fixed melting point and boiling point but it cannot be broken down into simpler substances by any chemical means. The substance Z is also a pure substance whose properties are entirely different from those of its constituents. The substance Z can however, be divided by electrolysis into two substances which belong to the same class of substances as Y.(a) What type of substance could X be? Name one substance like X.(b) What type of substance could Y be? Name one substance like Y.(c) What type of substance could Z be? Name one substance like Z.(d) Which process involves absorption or release of an appreciable amount of energy : formation of substance X or formation of substance Z?(e) Name the three groups into which all the substances like Y are divided on the basis of their properties.
Element A is soft, brittle and does not conduct electricity. Element B is hard, malleable and ‘ductile; and also conducts electricity. Which of the two elements, A or B, is a non-metal?
Name a non-metal which is a good conductor of electricity.
Name the temperature at which :(a) a liquid changes into a gas.(b) a solid changes into a liquid.
Name a non-metal which is good conductor of electricity?
Name a device which uses wind energy to generate electricity.
Name two substance which is soft and opaque.

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