Download PHYSICAL PROPERTIES - can observe w/o changing the

Compound
d
Homogeneous
d
Compound
d
Homogeneous
d
Compound
d
Homogeneous
d
Element
Element
Element
d
d
d
Heterogeneous
d
Heterogeneous
d
Heterogeneous
d
5 Signs of a Chemical
Reaction:
Spontaneous color
change
Production of a new
substance (solid =
precipitation, gas =
bubbling)
Formation of a new odor
Spontaneous change in
temperature
Spontaneous generation
of light
5 Signs of a Chemical
Reaction:
Spontaneous color
change
Production of a new
substance (solid =
precipitation, gas =
bubbling)
Formation of a new odor
Spontaneous change in
temperature
Spontaneous generation
of light
5 Signs of a Chemical
Reaction:
Spontaneous color
change
Production of a new
substance (solid =
precipitation, gas =
bubbling)
Formation of a new odor
Spontaneous change in
temperature
Spontaneous generation
of light
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
PHYSICAL CHANGES – do not change a
substance’s identity at an atomic level. Can be reversed
with a physical change.
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
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
Examples: breaking, tearing, crushing, smashing, cutting,
melting, freezing, boiling, evaporation, condensation,
dissolving into a solution, mixing together, wetting, drying,
painting
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.
CHEMICAL PROPERTIES – can’t observe without 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
PHYSICAL CHANGES – do not change a
substance’s identity at an atomic level. Can be reversed
with a physical change.
Examples: rust, decomposing, going sour/rancid, rotting, tarnishing,
oxidation, burning, combustibility, flammability, toxicity, electronegativity,
reactivity with other substances, pH, corrosiveness
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
Examples: breaking, tearing, crushing, smashing, cutting,
melting, freezing, boiling, evaporation, condensation,
dissolving into a solution, mixing together, wetting, drying,
painting
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.
CHEMICAL PROPERTIES – can’t observe without 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
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
Examples: rust, decomposing, going sour/rancid, rotting, tarnishing,
oxidation, burning, combustibility, flammability, toxicity, electronegativity,
reactivity with other substances, pH, corrosiveness
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