Collision Theory & Reaction Rate Experiment

​Prayer

​Attendance

Collision Theory & Rate of Chemical Reaction

​Competencies

• use simple collison theory to explain the effects of concentration, temperature, and particle size on the rate of reaction and

• define catalyst and describe how it affects the reaction rate

Objectives

• use simple collison theory to explain the effects of concentration, temperature, and particle size on the rate of reaction;

• define catalyst and describe how it affects the reaction rate;

• perform simple experiments on reaction of substances; and

• appreciate the importance of catalyst and chemical reactions in daily life.

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​Thoughts to Ponder

Open Ended

Share your opinion about the quotation.

Match

Match what factor affects the rate of chemical reaction in the following situation.

• Temperature

• Particle Size

• Concentration

The food was refrigerated.

A coal dust explosion happen in miners.

acid rain erodes marble fast

• The food was refrigerated.

• A coal dust explosion happen in miners.

• acid rain erodes marble fast

Dropdown

A catalyst is a substance that can be added to a reaction to increase​ the reaction rate without getting consumed in the process.​

Select answer

Drag and Drop

Identify the type of change shown in the picture.

Placeholder

Drag these tiles and drop them in the correct blank above

chemical

physical

Drag and Drop

Identify the type of change when baking bread.​

Placeholder

Drag these tiles and drop them in the correct blank above

chemical

physical

Drag and Drop

Identify the type of change in chopping wood. ​

Placeholder

Drag these tiles and drop them in the correct blank above

physical

chemical

Drag and Drop

Identify the type of change when ice cube melts.​

Placeholder

Drag these tiles and drop them in the correct blank above

physical

chemical

Drag and Drop

Identify the type of change shown in the picture.​

Placeholder

Drag these tiles and drop them in the correct blank above

chemical

physical

Dropdown

Heat is not a catalyst since it can't be taken out of the reaction in the same amount it was inputted into the reaction. ​

Select answer

Multiple Select

What are the requirements for the chemical reaction to occur?

Check all that applies.

• correct orientation

• collide / in contact with

• enough activation energy

• far from each other

What are some factors that affects the rate of chemical reaction?

• minimum energy required for a reaction to take place.

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​1. Activation Energy

• average kinetic energy of the particles in an object

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​2. Temperature

• refers to the number of particles present in a given volume of solution

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​3. Concentration

• refers to the measure of how much-exposed area a solid object has, expressed in square unit area.

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​4. Surface Area / Size of Particles

any substance that increase the rate of reaction without itself being consumed.

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​5. Catalyst

• speed up the rate of digestion process

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​Biological Enzymes

Pre-Laboratory

Discussion

• refer to your copy

​Procedures

3 beakers

2 set petri dish

water

hydrogen peroxide

dishwashing

yeast

​Materials

1. Effect on Concentration

• refer to your copy

​Procedures

2 beakers

tap water

2 tablets of ascorbic acid ( 1 Whole ascorbic and 1 pulverize)

​Materials

2. surface Area / Effect of Particle Size

• refer to your copy

​Procedures

2 beakers

hot water and cold water

2 tablets of ascorbic acid

​Materials

3. Effect of Temperature

• refer to your copy

​Procedures

2 beakers

Yeast

Hydrogen Peroxide

​Materials

4. Catalsyt

Activity Proper

• Sharing of output/ results

Completion of Data

Additional Activity (Picollage)

​Assignment

In your daily living, list (5 ) activities and its acting catalysts that you observe affecting the reaction rate. It can be present when you are eating, washing clothes and others.

Poll

How do you rate your experience today?

• challenging

• confusing

• enjoyable

• boring

• learning

Open Ended

Reflection:

Complete the statements:

Chemical reaction is_________________________

A catalyst is _____________________________

Share your opinion

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​Thoughts to ponder