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Kitchen Chemistry Introduction

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Kitchen Chemistry Introduction

Kitchen chemistry reactions illustration

🧪 Part 1: Understanding Chemical Reactions

1. What is a chemical reaction?

When substances mix together but stay the same

When substances change to form new substances

When substances get hot or cold

When substances change colour only

2. Which of these kitchen activities involve chemical reactions? (Tick all that apply)

Bread rising in the oven

Sugar caramelising on a crème brûlée

Ice melting in a drink

Apple slices turning brown

Mixing vinegar and baking soda

3. In a chemical reaction, the starting substances are called _____________ and the new substances formed are called _____________.
4. Why is it important for chefs and food scientists to understand chemical reactions?

🍳 Part 2: Kitchen Chemistry Types

5. Match each type of chemical reaction with its kitchen example by drawing lines:
Acid-base reaction
Thermal decomposition
Oxidation
Fermentation
Sourdough bread rising
Vinegar and baking soda fizzing
Sugar turning into caramel
Cut avocado turning brown
6. Describe one chemical reaction you have observed while cooking at home. What did you see, hear, or smell?
7. When vinegar (acid) reacts with baking soda (base), what gas is produced that causes the fizzing?

Oxygen

Carbon dioxide

Hydrogen

Nitrogen

🎯 Part 3: KWL Reflection

8. Complete this KWL chart about kitchen chemistry:

What I KNOW about chemical reactions in cooking:

What I WANT to learn about kitchen chemistry:

What I LEARNED today:

9. Extension Challenge: Research one kitchen chemical reaction not discussed in class and write a brief description below:

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