Chemical Reactions with Everyday Materials

Last updated at April 25, 2026 by

What are Chemical Reactions with Everyday Materials?

They are reactions between common substances that produce new materials .

Key Facts and Examples
  • Vinegar and baking soda react to produce carbon dioxide .
Example: Fizzing sound and gas bubbles form when mixed together
  • Gas produced can be tested using lime water .
Example: Gas from vinegar-baking soda reaction turns lime water milky
  • Chemical reactions produce observable signs like sound and bubbles .
Example: Fizzing bubbling sound indicates chemical change is occurring
  • New substances formed have different properties than original materials .
Example: Carbon dioxide gas is different from solid baking soda
Vinegar and Baking Soda Reaction Step 1 - Mix materials Add baking soda to vinegar Step 2 - Reaction occurs Fizzing sound and bubbles Step 3 - Gas forms Carbon dioxide is produced Step 4 - Test gas Pass through lime water Lime water turns milky!

Activity 5.4: Let us experiment

What you need:

  • Vinegar or lemon juice
  • Baking soda (sodium hydrogen carbonate)
  • Two test tubes
  • Freshly prepared lime water

What to do:

  • Step 1: Take a teaspoonful of vinegar in a test tube
  • Step 2: Add a pinch of baking soda to the vinegar
  • Step 3: Listen for sounds and observe bubble formation
  • Step 4: Pass the gas through lime water in another test tube
  • Step 5: Observe changes in the lime water

Observations

What you see:

  • Fizzing bubbling sound is heard immediately
  • Gas bubbles form in the vinegar mixture
  • Lime water turns milky when gas passes through
  • White precipitate settles in the lime water

Why this happens:
We have studied that chemical reactions produce new substances . This is why vinegar and baking soda react to form carbon dioxide .

  • Baking soda reacts with acid in vinegar
  • Carbon dioxide gas is produced as new substance
  • Carbon dioxide turns lime water milky confirming its presence
Vinegar and Baking Soda Reaction Main Reaction Vinegar + Baking Soda Carbon Dioxide + Other Substances Gas Test Carbon Dioxide + Lime Water Milky Solution + White Precipitate

Question (Page Section 5.2): What indicates that the gas formed is carbon dioxide?

Answer:
It is confirmed by the lime water test .

  • Lime water turns milky when carbon dioxide passes through
  • White precipitate forms showing chemical reaction occurred
  • This is the standard test for carbon dioxide gas
Carbon Dioxide Detection Gas produced From chemical reaction Pass through lime water Bubble gas into solution Observe change Solution turns milky Carbon dioxide confirmed!

Section Summary: A Substance May Change in Appearance and Not Remain the Same!

Chemical Changes Summary Lime Water Test Detects carbon dioxide gas Chemical Reactions Form new substances Observable Signs Sound, bubbles, colour change Gas Testing Confirms chemical change occurred
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