(6.2) Factors Affecting the Rate of Chemical Reaction Name: … · 2019-10-25 · (6.2) Factors...
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(6.2) Factors Affecting the Rate of Chemical Reaction Name: Date: Block: Reference: pp. 272 – 281 of BC Science 10. • rate of reaction: ________________________________________________ ___________________________________________________________ high reaction rate: a reaction that occurs ___________ low reaction rate: a reaction that occurs ___________ • In many chemical reactions, energy is required to break and form new chemical bonds. when energy is absorbed, it is called ___________________________ • ex. _______________________________________________ when energy is released, it is called ____________________________ • ex. _______________________________________________ • There are ____ main factors that affect the rate of chemical reactions 1. _________________________________________ 2. _________________________________________ 3. _________________________________________ 4. _________________________________________ 1. TEMPERATURE • Temperature: __________________________________________________ ________________________________________________________ The more energy molecules have, the ____________ the temperature.
Transcript of (6.2) Factors Affecting the Rate of Chemical Reaction Name: … · 2019-10-25 · (6.2) Factors...
(6.2) Factors Affecting the Rate of Chemical Reaction Name:
Date:
Block:
Reference: pp. 272 – 281 of BC Science 10.
• rate of reaction: ________________________________________________
___________________________________________________________
high reaction rate: a reaction that occurs ___________
low reaction rate: a reaction that occurs ___________
• In many chemical reactions, energy is required to break and form new chemical
bonds.
when energy is absorbed, it is called ___________________________
• ex. _______________________________________________
when energy is released, it is called ____________________________
• ex. _______________________________________________
• There are ____ main factors that affect the rate of chemical reactions
1. _________________________________________
2. _________________________________________
3. _________________________________________
4. _________________________________________
1. TEMPERATURE
• Temperature: __________________________________________________
________________________________________________________
The more energy molecules have, the ____________ the temperature.
When molecules have more energy, they move around more, bump into other
molecules more, and therefore react _____________.
• The rate of reaction changes with the temperature.
Examples:
_________________________________________________________
_________________________________________________________
Complete RC p. 274
2. CONCENTRATION
• Concentration: __________________________________________________
_________________________________________________________.
how much __________ is dissolved in ____________.
measured in ______ per unit ____________ (_____).
• The rate of reaction changes with the concentration.
Since there are more molecules per unit volume in high concentrations, there
are more opportunities for molecules to __________ and __________.
Ex. ______________________________________________________
3. SURFACE AREA
• surface area: ___________________________________________________
____________________________________________________
• The rate of reaction changes with the surface area of the reactants.
Surface area can be increased by creating __________ pieces.
A powdered substance has far more surface area than one large
chunk.
The increase in surface area must also be ___________ for reaction.
Ex. ______________________________________________________
Complete the RC p. 276
4. PRESENCE OF A CATALYST
• catalyst: ______________________________________________________
_________________________________________________________
_________________________________________________________.
The catalyst ________ ____ the reaction rate but ______ _____ get
used up as a reactant.
Catalysts often _________ the amount of energy necessary to break the
bonds in the reactants.
Ex.
1. ____________________________________________________
2. ____________________________________________________
SUMMARY:
• To make a reaction happen quickly:
_______________ the temperature where the reaction occurs.
_______________ the amount of surface area that reacts.
_______________ the concentration of reactants.
______ a catalyst or remove an inhibitor.
• To make a reaction happen slowly:
_____________ the temperature where the reaction occurs.
_____________ the amount of surface area that reacts.
_____________ the concentration of reactants.
____________ a catalyst or add an inhibitor.
