Free Printable ROR 1

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ROR 1

Total questions: 15

Worksheet time: 15mins

Name

Class

Date

Which reactions has the highest rate of reaction?

Rusting of water pipe

Photosynthesis in green plant

Burning of a small piece of charcoal in the air

Formation of stalactites and stalagmites

Which process has the highest rate of reaction?

Rusting

Respiration

Combustion

Photosynthesis

In which of the chemical reactions can the rate be determined by measuring the change in the gas volume?

Acidified potassium manganate (VII) solution with iron (II) sulphate solution

Sodium hydroxide solution with dilute hydrochloric acid

Silver nitrate solution with sodium chloride solution

Calcium carbonate with dilute hydrochloric acid

Products will form faster if____________

the particle size of the reactants are larger.

temperature is decreased.

concentration of the reactants are increased.

the reaction is not stirred.

A ______________ is a substance that increases the rate of a reaction without being used up during the reaction.

catalyst

product

reactant

solute

Smaller particle size allows for a _________ surface area to be exposed for the reaction.

larger

smaller

Increasing the temperature will increase the kinetic energy of particles, therefore increasing the collisions between particles.

false

true

Usually lowering the temperature will slow down a reaction.

false

true

the line with catalysts is

blue one

red one

10.

A catalyst works by

changing the order of the reaction

increasing the temperature

lowering the activation energy

making the activated complex

11.

The ____________ states that atoms, ions, or molecules must collide in order to react.

transition state

activation energy

rate law

collision theory

12.

Increasing the ____ causes the particles (atoms

or molecules) of the reactants to move more quickly so that

they collide with each other more frequently and with more

energy.

Catalyst

Surface Area

Temperature

Concentration

13.

The collisions which bring about a chemical reaction are called:

Consistent collisions

Normal collisions

Effective collisions

None of the above

14.

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

15.

Under the collision theory, the particles must collide ____ 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

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ROR 1

Total questions: 15

Worksheet time: 15mins

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