Baking Soda
Baking soda is sodium hydrogen carbonate, a mild base used in cooking and as an antacid.
Practice This ConceptMain explanation
Teacher explanation
Baking soda is a familiar compound in this chapter because it has both household and medical uses. In cooking, it helps cakes and breads become soft because carbon dioxide is released when it reacts or is heated. In medicine, it can help reduce excess stomach acid because it is a mild base. It is weaker and safer than strong bases like sodium hydroxide.
Example
A cake batter becomes fluffy when baking soda releases carbon dioxide during heating.
Simple analogy
Baking soda: bake, bubble, and ease acidity.
Common confusion
Students often confuse baking soda with washing soda. Baking soda is sodium hydrogen carbonate, not sodium carbonate decahydrate.
Exam tip
When you see baking soda, remember cooking, antacid use, and carbon dioxide release on heating.
Answer writing and exam use
1-mark use
Write the exact meaning of baking soda in one clean line.
2-mark use
Define baking soda and add one example or condition.
3-mark use
Explain baking soda, show the method or example, and mention the common mistake.
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