🔍 Visual Reaction Detector — 5 Signs a Chemical Reaction Occurred
🫧
Bubbles / Gas
CO₂ was produced!
🌡️
Temperature Change
Energy released or absorbed
🎨
Color Change
Atoms rearranged into new molecules
☁️
Precipitate
A solid formed from two liquids
💡
Light / Energy
Like fire or bioluminescence
⚗️ Reactants → Products Diagram
⚛️ Atoms don't disappear — they REARRANGE! The same atoms, just in new combinations.
📊 Mixture vs. Chemical Reaction
| Question |
🥣 Mixture |
💥 Reaction |
| New substance? | ❌ No | ✅ Yes |
| Reversible? | ✅ Usually | ❌ Rarely |
| Same properties? | ✅ Yes | ❌ New properties |
| Example | Salt + Water | Baking Soda + Vinegar |
🌍 Chemistry Is Everywhere!
🍳
Frying Egg
Protein denaturation
🦷
Toothpaste
Fights cavity acids
🚗
Car Rusting
Iron + oxygen reaction
🕯️
Candle Burning
Fuel + O₂ → CO₂ + heat
🍞
Bread Rising
Yeast + sugar → CO₂
🍋
Lemon + Soda
Acid + base → fizz!
⚖️ Conservation of Mass — Mass is NEVER Created or Destroyed!
⚖️
+
=
The total mass of reactants always equals the total mass of products!
