View source for Chemical Reaction Exploration

{{blc| Chemical Reaction Exploration }}{{ct| Activity }}
=== '''Activity Kit: Chemical Reaction Exploration''' ===
'''Objective''':

Observe a simple chemical reaction (e.g., vinegar and baking soda) and record the changes in physical and chemical properties. Understand why this is a chemical reaction, not just a physical change.
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==== '''Materials Included in the Kit''': ====

# '''Reaction Materials''':
#* Vinegar (50 mL)
#* Baking soda (1 tablespoon)
#* Measuring spoons and cups
#* Plastic cup or small container
#* Small balloon (optional, for capturing gas)
#* Plastic funnel (optional, for easier pouring)
# '''Observation Tools''':
#* Timer or stopwatch
#* Notebook and pen for recording observations
# '''Worksheet''':
#* Table for recording initial observations, changes in properties, and reactions during the experiment
#* Space for drawing a diagram or writing about the reaction
#* Bonus question prompts
# '''Safety Equipment''':
#* Safety goggles (recommended)
#* Lab gloves (optional)

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{{: Optional reactions }}

==== '''Instructions for the Activity''': ====

# '''Group Division''':  This group will perform the experiment with vinegar and baking soda and record their observations.
# '''Set-Up''':
#* '''Step 1''': Place a small amount of '''baking soda''' (1 tablespoon) into the bottom of the plastic cup or container.
#* '''Step 2''': Using the '''measuring cup''', measure out '''50 mL of vinegar'''. If you wish to capture the gas produced, you may attach a '''balloon''' to the top of the container (over the opening). This will help you observe gas formation.
# '''Reaction''':
#* '''Step 3''': Pour the vinegar into the cup with baking soda.
#* '''Step 4''': Observe what happens immediately. Look for changes such as bubbles, fizzing, color change, or gas production.
# '''Recording Observations''':  As the reaction occurs, observe and record the following on your '''worksheet''':
#* What do you see? (e.g., fizzing, bubbling, color change)
#* What do you hear? (e.g., bubbling or fizzing sound)
#* Do you notice any change in temperature? (e.g., is the container warmer or cooler?)
#* What happens to the materials? (e.g., does the vinegar disappear? Does the baking soda dissolve?)
# '''Bonus Question''':
#* Why is this a '''chemical reaction''' and not just a '''physical change'''? '''Hint''': Think about the '''new substances''' formed in the reaction.

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==== '''Worksheet''': ====
'''Observations Table''':
{| class="wikitable"
!'''Observation'''
!'''Before Reaction'''
!'''During Reaction'''
!'''After Reaction'''
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|Appearance of Vinegar (Color, Transparency)
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|Appearance of Baking Soda (Color, Texture)
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|Gas Formation (Bubbles, Fizzing)
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|Temperature Change (Hot/Cold)
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|Other Changes (e.g., color, texture)
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|}
----'''Explanation of Reaction''':

# '''What changes did you observe during the reaction?''' ----
# '''Why is this considered a chemical reaction and not just a physical change?''' ----
# '''What new substances were formed during this reaction?''' ----

----'''Bonus''': '''Explain the role of the chemical properties of the reactants in this reaction.'''
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==== '''Reflection Sheet''': ====

# '''What is the difference between a physical and a chemical change?''' ----
# '''How do you think gas formation helps prove that a chemical change has occurred?''' ----
# '''Why might this reaction be important in real-life situations (e.g., in cooking, cleaning)?''' ----

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==== '''Timer/Checklist''': ====

* '''5 min''': Set up the materials for the reaction.
* '''10 min''': Add vinegar to baking soda and observe the reaction.
* '''10 min''': Record observations (appearance, sound, gas formation, etc.).
* '''10 min''': Write the explanation of the reaction and why it’s a chemical reaction.
* '''5 min''': Complete the bonus question and reflection sheet.
* '''5 min''': Prepare a brief summary of the experiment for the group presentation.

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==== '''Safety Reminder''': ====

* Always wear safety goggles when conducting experiments, especially when working with liquids.
* Be careful when handling materials and pouring liquids.
* Clean up the experiment area once done.

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