PHYSICAL PROPERTIES - Can Observe W/O Changing the Substance S Identity at an Atomic Level

PHYSICAL PROPERTIES - can observe w/o changing the substance’s identity at an atomic level.
Intensive(does not depend on amount): EX: shape, texture, color, odor, luster, malleability, ductility, conductivity, hardness, melting/freezing/boiling point, density, viscosity, buoyancy
Extensive (depends on amount): EX: mass, volume, length / CHEMICAL PROPERTIES – can’t observe without changing the substance’s identity at an atomic level.
Examples: rust, decomposing, going sour/rancid, rotting, tarnishing, oxidation, burning, combustibility, flammability, toxicity, electronegativity, reactivity with other substances, pH, corrosiveness
PHYSICAL CHANGES – do not change a substance’s identity at an atomic level. Can be reversed with a physical change.
Examples: breaking, tearing, crushing, smashing, cutting, melting, freezing, boiling, evaporation, condensation, dissolving into a solution, mixing together, wetting, drying, painting / CHEMICAL CHANGES – alter the substance’s identity at an atomic level. Can’t be reversed with a physical change.
Examples: burning, dissolving something in an acid, letting iron rust, letting silver tarnish, mixing vinegar and baking soda, cooking an egg
Also called a CHEMICAL REACTION (5 signs to watch for)
formation of an odor, change in temp, formation of a precipitate, change in color, formation of gas
PHYSICAL PROPERTIES - can observe w/o changing the substance’s identity at an atomic level.
Intensive(does not depend on amount): EX: shape, texture, color, odor, luster, malleability, ductility, conductivity, hardness, melting/freezing/boiling point, density, viscosity, buoyancy
Extensive (depends on amount): EX: mass, volume, length / CHEMICAL PROPERTIES – can’t observe without changing the substance’s identity at an atomic level.
Examples: rust, decomposing, going sour/rancid, rotting, tarnishing, oxidation, burning, combustibility, flammability, toxicity, electronegativity, reactivity with other substances, pH, corrosiveness
PHYSICAL CHANGES – do not change a substance’s identity at an atomic level. Can be reversed with a physical change.
Examples: breaking, tearing, crushing, smashing, cutting, melting, freezing, boiling, evaporation, condensation, dissolving into a solution, mixing together, wetting, drying, painting / CHEMICAL CHANGES – alter the substance’s identity at an atomic level. Can’t be reversed with a physical change.
Examples: burning, dissolving something in an acid, letting iron rust, letting silver tarnish, mixing vinegar and baking soda, cooking an egg
Also called a CHEMICAL REACTION (5 signs to watch for)
formation of an odor, change in temp, formation of a precipitate, change in color, formation of gas
PHYSICAL PROPERTIES - can observe w/o changing the substance’s identity at an atomic level.
Intensive(does not depend on amount): EX: shape, texture, color, odor, luster, malleability, ductility, conductivity, hardness, melting/freezing/boiling point, density, viscosity, buoyancy
Extensive (depends on amount): EX: mass, volume, length / CHEMICAL PROPERTIES – can’t observe without changing the substance’s identity at an atomic level.
Examples: rust, decomposing, going sour/rancid, rotting, tarnishing, oxidation, burning, combustibility, flammability, toxicity, electronegativity, reactivity with other substances, pH, corrosiveness
PHYSICAL CHANGES – do not change a substance’s identity at an atomic level. Can be reversed with a physical change.
Examples: breaking, tearing, crushing, smashing, cutting, melting, freezing, boiling, evaporation, condensation, dissolving into a solution, mixing together, wetting, drying, painting / CHEMICAL CHANGES – alter the substance’s identity at an atomic level. Can’t be reversed with a physical change.
Examples: burning, dissolving something in an acid, letting iron rust, letting silver tarnish, mixing vinegar and baking soda, cooking an egg
Also called a CHEMICAL REACTION (5 signs to watch for)
formation of an odor, change in temp, formation of a precipitate, change in color, formation of gas