Everyday chemical reactions in your home: examples for kids

📚 Quick Study Guide

• 🔥 Combustion: Burning something (like wood in a fireplace) is a chemical reaction that needs fuel, oxygen, and heat.
• 🍎 Oxidation: When an apple slice turns brown after being exposed to air, that's oxidation! It's a reaction with oxygen in the air.
• 🫧 Acid-Base Reactions: Mixing vinegar (an acid) and baking soda (a base) creates bubbles of carbon dioxide gas.
• ⚙️ Neutralization: Antacids work by neutralizing excess stomach acid.
• 🌡️ Temperature Change: Some chemical reactions release heat (exothermic), like burning, and others absorb heat (endothermic), like melting ice using salt.
• 🎂 Baking: When you bake a cake, many chemical reactions happen at once, causing the cake to rise and change flavor.
• 🌿 Photosynthesis: Plants use sunlight, water, and carbon dioxide to create their own food (sugar) and oxygen. The formula is: $6CO_2 + 6H_2O + Light \rightarrow C_6H_{12}O_6 + 6O_2$

🧪 Practice Quiz

1. Which of these is an example of combustion?
   1. Adding sugar to tea
   2. Burning a candle
   3. Melting ice
   4. Dissolving salt in water
2. What causes an apple slice to turn brown?
   1. Condensation
   2. Oxidation
   3. Sublimation
   4. Evaporation
3. What gas is produced when you mix vinegar and baking soda?
   1. Oxygen
   2. Hydrogen
   3. Carbon Dioxide
   4. Nitrogen
4. Antacids help with heartburn through what kind of reaction?
   1. Combustion
   2. Neutralization
   3. Oxidation
   4. Decomposition
5. A reaction that releases heat is called:
   1. Endothermic
   2. Exothermic
   3. Isothermic
   4. Adiabatic
6. What process allows plants to create food?
   1. Respiration
   2. Fermentation
   3. Photosynthesis
   4. Transpiration
7. Which of the following describes baking a cake?
   1. A single physical change
   2. A single chemical reaction
   3. Many chemical reactions happening at once
   4. No change at all