Q1
What property do metals typically have?
AShininess (lustre)
BDullness
CBrittleness
DPoor conductivity
ICSEClass 7 (ICSE)ScienceCh 13 · Topic 1
Metals and Non-metals
Metals and non-metals have distinct physical and chemical properties, with metals typically being shiny, conductive, and malleable, unlike m
Core concept
Metals are typically shiny (lustrous), good conductors of heat and electricity, malleable (can be hammered into shapes), and ductile (can be drawn into wires).
How it works
Non-metals typically lack these properties, being dull, poor conductors, and brittle (breaking rather than bending) when solid.
Why it matters
Examples of metals include iron, copper, and gold, while examples of non-metals include oxygen, sulfur, and carbon.
Key detail
Understanding the properties of metals and non-metals helps us select appropriate materials for different uses, like wiring or construction.
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Quick notes
• Metals are shiny, conductive, malleable, ductile.
• Non-metals are typically dull, poor conductors, brittle.
• Examples of metals: iron, copper, gold.
• Examples of non-metals: oxygen, sulfur, carbon.
• Malleable means can be hammered into shapes.
• Ductile means can be drawn into wires.
• Properties guide material selection.
• This applies to wiring and construction.