# Discovering Calorimetry: Exploring Heat Measurement

Discovering Calorimetry: Exploring Heat Measurement
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Slide 1: Tekstslide
MathematicsFurther Education (Key Stage 5)

In deze les zitten 19 slides, met interactieve quizzen, tekstslides en 1 video.

Lesduur is: 60 min

## Onderdelen in deze les

Discovering Calorimetry: Exploring Heat Measurement

#### Slide 1 -Tekstslide

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Learning Objective
Understand the principles of calorimetry and its applications.

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#### Slide 3 -Woordweb

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The cooling curve of a substance, such as stearic acid, represents the temperature changes that occur as the substance transitions from a higher temperature to a lower temperature.

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Introduction to Calorimetry
Calorimetry is a branch of science that deals with the measurement of heat transfer in physical and chemical processes.
The purpose of calorimetry is to quantify the amount of heat released or absorbed during a reaction or a physical change.

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Exothermic and endothermic reactions
Exothermic and endothermic reactions are classifications based on the direction of heat flow during a chemical or physical process.

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System , surrounding and boundary

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Exothermic Reactions:

Exothermic reactions release heat energy to the surroundings.
Characteristics:
The system loses energy to the surroundings.
The temperature of the surroundings increases.
The enthalpy change (-ΔH) is negative.

Examples: Combustion reactions, many oxidation reactions, and certain neutralization reactions are often exothermic.
In an exothermic reaction, the products have lower energy than the reactants, and the excess energy is released as heat. An example is the combustion of gasoline in a car engine.

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Endothermic Reactions:

Endothermic reactions absorb heat energy from the surroundings..
Characteristics:
The system gains energy from the surroundings.
The temperature of the surroundings decreases.
The enthalpy change (+ ΔH) is positive.

Examples: Dissolution of ammonium chloride in water, photosynthesis, and the reaction between baking soda and vinegar are examples of endothermic reactions.
In an endothermic reaction, the products have higher energy than the reactants, and the additional energy is absorbed from the surroundings. This often leads to a decrease in the temperature of the surroundings.

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Types of Calorimeters
There are different types of calorimeters including bomb calorimeters, coffee cup calorimeters, and differential scanning calorimeters.

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Principles of Calorimetry
Calorimetry is based on the principle of heat exchange, where the heat released or absorbed in a reaction is measured.

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Calorimetry Applications
Calorimetry is used in various fields including chemistry, biology, and environmental science for studying energy changes in reactions.

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Calorimetry Experiment
Perform a simple calorimetry experiment to measure the heat of a reaction using a basic calorimeter setup.

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Calculating Heat Changes
Learn how to calculate heat changes using calorimetry data and the specific heat capacity of substances.

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Real-World Relevance
Understand how calorimetry is used in industries for quality control, food science, and energy research.

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Write down 3 things you learned in this lesson.

#### Slide 17 -Open vraag

Have students enter three things they learned in this lesson. With this they can indicate their own learning efficiency of this lesson.
Write down 2 things you want to know more about.

#### Slide 18 -Open vraag

Here, students enter two things they would like to know more about. This not only increases involvement, but also gives them more ownership.