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Nga Ta‑k egina

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Lahnissi Youssra‑k egina

ATC Homologation

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classification of matter

materials

A materials is a substance that is used for making object

Main topic

matter can be classified based on their physical properties

Subtopic

flexibility

hardness

the ability of a material to withstand wear and scratches

strength

the ability of a material to support a heavy load without breaking or tearing

density

mass per unit volume of a material mass DENSITY= ------- volume