Endothermic reaction Follow FizzicsEd 150 Science Experiments: Comments 8 You will need: Foam cup Thermometer A quarter cup of vinegar 1 tablespoon of bicarbonate soda. Copyright Instruction 1 Pour vinegar into the foam cup and measure its temperature with the thermometer and record this. 2 Add the bicarbonate soda gradually to avoid overflowing foam and stirring with the thermometer. 3 Record your observations of the temperature changes over time. Does the liquid get hotter or colder? 4 Get the Unit of Work on Heat Energy here! What actually is heat? How does heat move through different materials? How does heat change the properties of materials and more! Includes cross-curricular teaching ideas, student quizzes, a sample marking rubric, scope & sequences & more 5 School science visits since 2004! – Curriculum-linked & award-winning incursions. – Over 40 primary & high school programs to choose from. – Designed by experienced educators. – Over 2 million students reached. – Face to face incursions & online programs available. – Early learning centre visits too! 6 Online courses for teachers & parents – Help students learn how science really works Why Does This Happen: Did the temperature increase, decrease, or stay the same? What else did you notice about the reaction? The reaction between vinegar and bicarbonate soda can be written as: Vinegar + Bicarbonate Soda —> Carbon Dioxide + Water + Sodium Acetate This is an endothermic reaction, which means the mixture requires and takes heat from its surroundings in order to react. This results in a drop in temperature of the contents of the cup. As an extension for high school chemistry, you can use this experiment to demonstrate how to calculate the change in enthalpy for a reaction: where: ΔH = change in enthalpy (kJ), c = specific heat capacity of water (4.18 kJ kg-1 °C-1), m = mass of solution (kg), ΔT = change in temperature of the solution (°C). For other bicarbonate soda and vinegar experiments, check out this list in our blog! Variables to test More on variables here Does it matter about how much vinegar or bicarbonate you add? if you change the starting temperature, does this affect the change in temperature? Learn more! From colour changes to slimy science, we’ve got your kitchen chemistry covered! Get in touch with FizzicsEd to find out how we can work with your class. Chemistry Show Years 3 to 6 Maximum 60 students Science Show (NSW & VIC) 60 minutes Online Class Available Read More Enquire Now Magic Crystal Tree Science Kit $4.95 inc. GST View Details Add to Cart Trustpilot STEM Full Day Accelerator - Primary Designed from real classroom experiences, this modular day helps you create consistently effective science learning that directly address the new curriculum with easily accessible and cost-effective materials. Read More Enquire Now Be Amazing! How to teach science, the way primary kids love. $29.95 inc. GST View Details Add to Cart Trustpilot
Get the Unit of Work on Heat Energy here! What actually is heat? How does heat move through different materials? How does heat change the properties of materials and more! Includes cross-curricular teaching ideas, student quizzes, a sample marking rubric, scope & sequences & more
School science visits since 2004! – Curriculum-linked & award-winning incursions. – Over 40 primary & high school programs to choose from. – Designed by experienced educators. – Over 2 million students reached. – Face to face incursions & online programs available. – Early learning centre visits too!
From colour changes to slimy science, we’ve got your kitchen chemistry covered! Get in touch with FizzicsEd to find out how we can work with your class.
Chemistry Show Years 3 to 6 Maximum 60 students Science Show (NSW & VIC) 60 minutes Online Class Available Read More Enquire Now
STEM Full Day Accelerator - Primary Designed from real classroom experiences, this modular day helps you create consistently effective science learning that directly address the new curriculum with easily accessible and cost-effective materials. Read More Enquire Now
Designed from real classroom experiences, this modular day helps you create consistently effective science learning that directly address the new curriculum with easily accessible and cost-effective materials.
Be Amazing! How to teach science, the way primary kids love. $29.95 inc. GST View Details Add to Cart Trustpilot
Hi! Depending on which country you’re from, you can find thermometers in chemists/pharmacies/drugstores. No need to spend too much money on these though. Enjoy! Reply
This was very helpful. Thank you Are there any other methods to check if a reaction is endothermic? I’m just asking. Reply
Hi there! Glad that this experiment was helpful for you. Generally checking the temperature change is the best way to see if a chemical reaction is endothermic or exothermic. If you would like to know more, there is a great discussion on this on Khan Academy. All the best! Reply
Hi Sam! The controlled experiment in this case would be a cup of vinegar without adding the bicarbonate soda. Take a measurement of the temperature of the vinegar throughout. Reply
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