Why did it happen the difference in this weight? Because when baking soda was decomposed by heating, it vaporized water and carbon dioxide into the air. There only stayed sodium carbonate dried and softened in the test tube.
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Here are the corrections:
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"Why did it happen the difference in this weight?"
- Explanation: This sentence is a bit confusing. We should say, "Why did this difference in weight happen?" to make it clearer.
- Corrected Sentence: "Why did this difference in weight happen?"
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"Because when baking soda was decomposed by heating, it vaporized water and carbon dioxide into the air."
- Explanation: This sentence mostly makes sense, but we can make it a little clearer. We can remove "because" and add "the" before “water” and “carbon dioxide” to make the sentence sound better.
- Corrected Sentence: "When baking soda was decomposed by heating, it vaporized the water and the carbon dioxide into the air."
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"There only stayed sodium carbonate dried and softened in the test tube."
- Explanation: This sentence is confusing and could be clearer. It’s better to say, "Only the sodium carbonate remained, dried and softened in the test tube."
- Corrected Sentence: "Only the sodium carbonate remained, dried and softened in the test tube."
Revised Text:
Why did this difference in weight happen? When baking soda was decomposed by heating, it vaporized the water and the carbon dioxide into the air. Only the sodium carbonate remained, dried and softened in the test tube.
