Question
Answer the following questions: [3 MARKS]
1) What is the chemical name of baking soda?
2) What happens when vinegar reacts with baking soda? How can we say if it is a chemical or a physical change?
Answer: Option A
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Each part: 1 Mark
1) Sodium hydrogen carbonate is the chemical name of baking soda.
2) When vinegar reacts with baking soda, carbon dioxide is formed.
Vinegar (Acetic acid) + Baking soda (Sodium hydrogen carbonate) → Carbon dioxide + other substances
We can say that the above reaction is a chemical change because carbon dioxide is formed. It is a new substance.
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