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Unit 8 (Section 1)

Authored by Jacob Jensen

Chemistry

10th - 12th Grade

Used 15+ times

Unit 8 (Section 1)
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15 questions

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1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Which statement explains why the speed of

some chemical reactions is increased when the

surface area of the reactant is increased?

This change alters the electrical

conductivity of the reactant particles.

This change exposes more reactant

particles to a possible collision.

This change increases the density of the

reactant particles.

This change increases the concentration of

the reactant.

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What two factors govern whether a collision between reacting particles will be effective?

orientation and potential energy 
kinetic energy and temperature 
kinetic energy and orientation 
potential energy and kinetic energy 

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Under the collision theory, the particles must collide with  ____ and ____ for a reaction to occur.

sufficient rate and sufficient energy
sufficient surface area and correct orientation
sufficient catalyst and sufficient energy
sufficent energy and correct orientation

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

More collisions correspond to a: 

Faster reaction rate  
Slower reaction rate
Constant reaction rate 
None of the above

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Reaction rate means...

amount of product formed
speed of reaction
concentration of reacting particles
combining reactants with products

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

To slow down a chemical reaction you will do one of the following:

Place the reactants in hot water
Place the products in ice bath
Place the reactants in a ice bath
Keep stirring the reactants with a stirring rod

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Which of the following increase the reaction rate?

less surface area
lower temperature
an inhibitor
increased concentration

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