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ENERGY: Action of electricity on materials
ENERGY: Action of heat on materials
MATTER - PROPERTIES AND TRANSFORMATION: Chemical Reactions And Equations
MATTER - PROPERTIES AND TRANSFORMATION: Chemical Symbols, Formulae And Valency
MATTER - PROPERTIES AND TRANSFORMATION: Effect Of Heat On Substances
MATTER - PROPERTIES AND TRANSFORMATION: Introduction To Chemistry - Symbols
MATTER - PROPERTIES AND TRANSFORMATION: Mixtures And Pure Substances
MATTER - PROPERTIES AND TRANSFORMATION: Periodic table - Families of elements and Relative reactivity
MATTER - PROPERTIES AND TRANSFORMATION: Reaction With Oxygen of air
MATTER - PROPERTIES AND TRANSFORMATION: The Atom And Sub-Atomic Particles
5/50 MCQs for:
ENERGY: Action of electricity on materials
Which of the following describes a material that allows electric current to flow through it easily?
Insulator.
Semiconductor.
Conductor.
Non-conductor.
Which of these non-metals is a good conductor of electricity?
Graphite.
Wood.
Sulfur.
Diamond.
Pure ethanol (C₂H₅OH) is generally classified as a:
Non-conductor.
Semiconductor.
Electrolyte.
Conductor.
Pure water conducts electricity:
Moderately.
Only at high temperatures.
Very poorly (it's essentially a non-conductor).
Very well.
Which of the following substances conducts electricity in its molten state but not in its solid state?
Graphite.
Copper.
Sulfur.
Sodium chloride.
