Reactions!! :). Quels sont les types de réactions différents?

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Transcription de la présentation:

Reactions!! :)

Quels sont les types de réactions différents?

COMMENT ON PEUT L’ÉCRIRE Reactif Produits Le(s) composé(s) ou les éléments au début Le(s) composé(s) ou les éléments qui sont formés. Les composés et les éléments auront une lettre souscrite pour démontrer l’état de matière pendant qu’ils réagissent. (g) gaz, (s) solide, (l) liquide, (aq) aqueux.

Identifiez les réactifs et les produits de ces réactions: A) CO 2(g) + H 2 O (l) → C 6 H 12 O 6(s) + O 2(g) B) Fe (s) + 0 2(g) → Fe 2 O 3(s) Pouvez-vous vous rappeler des noms des matériaux aussi? Essayez!

Word problems.. words to look for! - Makes - Produces - Forms - Burns - Rots - Corrods - Rusts CHEMICAL REACTIONS ONLY!!

Example Silver + Bromine → Silver bromide A common error is to say: “Silver plus bromine equals silver bromide” The correct way to think of this is: “Silver and bromine makes silver bromide” OR “Silver and bromine produces silver bromide”

Practice (hint remember the diatoms!) Write the word equation for… 1) Mg (s) + S (s) → MgS (s) 2) CH 4(g) + O 2(g) → CO 2(g) + H 2 O (g) + energy (is the above exothermic or endothermic?) 3) Magnesium chloride breaks down into magnesium solid and clorine gas

La conservation de la masse La masse doit être le même durant toute la réaction En utilisant la loi de la Conservation de la masse, qu’est-ce que c’est: a) Mg (s) + S (s) → MgS (s) 24.3 g _____g 56.4g b) Fe (s) + S (s) → FeS (s) ____g 8.0 g 21.9g

Practice Problems :)

Rusting (Reactions with 0 2 )

Burning (Reactions with 0 2 )

EPIC CHEMISTRY TIME Reaction rate

Est-il plus facile de digester le repas epic d’un sandwich de 84 oeufs s’il était maché ou pas maché? POURQUOI?

La digestion est une réaction…. Serperficie bas Superficie haute Cela prends plus Cela prends moins de de temps pour finir temps pour finir la réaction réaction

Le temps de réaction: Superfécie Le temps de réaction (le temps qu’ils prends pourqu’une réaction finisse) est plus court quand il y a une plus grande surface parce que…. _________________________.

Indice de réaction: Catalyseurs CATalyseur- un substance qui accelère l’indice de réaction INHIBITeurs peuvent être utilisé pour ralentire une réaction Un CAT peut forcer une souris a ACCELÉRER

DEMO What is the catylast in this reaction???

Indice de réaction: Température Make a conclusion about how temperature affects reaction rate based on the information on the graph.

Make a conclusion about how temperature affects reaction rate based on the information on the graph

Reaction Rate: Temperature Temperature affects reaction rate in different ways. It can; - Speed up reaction rate - Slow down reaction rate Need to look at the evidence and look at patterns.

How did temperature affect the reaction rate of the glow sticks (prior to Christmas)