transfo. chimiques Flashcards

1
Q

Synthèse

A

Combinaison de deux ou plusieurs réactifs pour former un nouveau produit

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2
Q

Décomposition

A

séparation d’un composé en 2 ou plusieurs composés

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3
Q

Précipitation

A

Formation de précipité lors d’un mélange

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4
Q

neutralisation acidobasique

A

acide+base -> sel + eau

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5
Q

oxydation (STE)

A

Implique de l’oxygène ou une subs. ayant des propriétés semblables

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6
Q

Combustion

A

combustible(CH) + Dioxygene -> eau (g) + C02 + (PARFOIS) Energie

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7
Q

Respiration cellulaire

A

Utilise glucose + O2 -> eau + co2 + E

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8
Q

Photosynthèse

A

produit glucose et dioxygene

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9
Q

Libere bcp d’energie sous forme de chaleur et lumiere dans un court laps de temps

A

vive

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10
Q

tres longue periode de temps et énergie libérée se dissipe graduellement dans l’environnement

A

lente

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11
Q

lorsque combustible atteint temp. d’ignition sans apport d’energie ext.

A

spontanée

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12
Q

combustible
comburant
temp. d’ignition

A

combustible: propane, bois, essence
comburant: dioxygene
temp: temperature suffisante pour amorcer la combustion

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13
Q

gazeux->liquide

A

condensation liquide

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14
Q

liquide -> solide

A

solidification

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15
Q

solide -> gazeux

A

sublimation

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16
Q

gazeux -> solide

A

condensation solide