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Properties of Solids
5
Physical & Chemical Properties
Physical Properties: characteristics that you can observe directly.
Chemical Properties: characteristic of matter that can only be observed when one substance changes into a different substance.
Examples:
Burning
Rusting
Anything involving
Examples:
Color
Texture
Density
Brittleness
State of Matter
Physical or Chemical Change?
Melting chocolate to dip strawberries.
Using a magnet to separate sand & metal filings.
Rotting meat.
Fireworks exploding.
Arrangement of Atoms/Molecules
Crystalline: particles are arranged in an orderly, repeating pattern.
Amorphous: particles are arranged in a random way.
Mechanical Properties Continued
Elasticity: a solid's ability to be stretched and then return to its original size
Brittleness: tendency of a solid to crack or break before stretching very much.
Ductile: a solid's ability to be bent a relatively large amount without breaking.
Mechanical Properties
Strength: the ability of a solid object to maintain its shape even when force is applied.
Tensile Strength: measure of how much stress a material can withstand before breaking.
Hardness: measure of a solid's resistance to scratching.
Properties of Solids
Force