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How are substances classified based on conductivity?
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Electrolytes are soluble salts, acids, and bases that conduct electricity when dissolved. Non-electrolytes do not conduct.
What is the distinction between physical and chemical properties concerning conductivity in substances?
Metallic conductors conduct due to physical properties (free electrons) while electrolytic conduction is a chemical property.
Define electrolytes in the context of Electrolytic Dissociation Theory.
Electrolytes are substances that dissociate into ions when dissolved in a solvent, enabling them to conduct electricity.
Explain the influence of bonding types on conductivity.
Ionic bonds generally form strong conductors, while covalent bonds might not always facilitate electrical conductivity.
Give an example of a substance that does not conduct electricity in its solid state but efficiently conducts when dissolved.
Sodium chloride (NaCl) does not conduct in its solid state but becomes a strong electrolyte when dissolved in water.
What is the practical connection between electrolytes and smartphones?
Smartphones use batteries containing electrolytes to conduct electricity.
How can the conductivity of substances be tested according to the lecture?
A special device that checks conductivity closes an electric circuit visible through a light bulb indication.
Explain the relevance of electrolytes in daily life based on the lecture.
Various electrolytic substances are found in battery fluids and smartphone components, integral to their functionality.
What type of bonds do strong electrolytes like Sodium Chloride have?
Strong electrolytes have ionic bonds.
What is the role of dissolution in conductivity according to the lecture?
Dissolution can transform non-conducting solids like NaCl into strong electrolytes when dissolved in water.
How are pH levels related to the taste of substances?
Future lectures will explore why certain substances taste sour (acidic) or bitter based on their pH levels.
Why do metallic conductors like silver conduct electricity?
Metallic conductors have free electrons due to their physical properties.
Explain why tap water emits a weak light according to the lecture.
Observations show that tap water contains impurities like salts that enable it to conduct electricity and emit light.
How are weak/non-electrolytes defined in terms of chemical bonds?
Weak/non-electrolytes have covalent bonds.
Why is understanding chemical properties important in technology and environmental applications?
Understanding chemical properties helps in developing devices and processes, as shown with electrolytes in smartphones and batteries.
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