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The Experiment

You can start the experiment when it set materials up. First, we put some baking soda into the test tube. Then we observed it while it was heated for about 10 minutes over the alcohol lamp. We could see moisture of water vapor in container. We also checked carbon dioxide out because it went out flame. When you observed the weight it had change. Before heating the baking soda + tube was 52g. But after heating it's weight 39g. It became 5g lighter than before.

You can start the experiment when it set materials up. First, we put some baking soda into the test tube. Then we observed it while it was heated for about 10 minutes over the alcohol lamp. We could see moisture of water vapor in container. We also checked carbon dioxide out because it went out flame. When you observed the weight it had change. Before heating the baking soda + tube was 52g. But after heating it's weight 39g. It became 5g lighter than before.
==================================================================================================================================

Here are the corrections:

  1. "You can start the experiment when it set materials up."

    • Explanation: The phrase “it set materials up” is confusing. We should say “when the materials are set up” to make it clear.
    • Corrected Sentence: "You can start the experiment when the materials are set up."
  2. "First, we put some baking soda into the test tube."

    • Explanation: This sentence is clear and correct, so no changes are needed.
  3. "Then we observed it while it was heated for about 10 minutes over the alcohol lamp."

    • Explanation: This sentence is mostly correct, but it would sound better with “as it was heated” instead of “while it was heated.”
    • Corrected Sentence: "Then we observed it as it was heated for about 10 minutes over the alcohol lamp."
  4. "We could see moisture of water vapor in container."

    • Explanation: We need "the" before “container” to specify which container, and we should say “moisture or water vapor” to make it clearer.
    • Corrected Sentence: "We could see moisture or water vapor in the container."
  5. "We also checked carbon dioxide out because it went out flame."

    • Explanation: “Checked carbon dioxide out” sounds confusing. Instead, we can say “detected carbon dioxide” to make it clearer. Also, “it went out flame” should be corrected to “it put out the flame.”
    • Corrected Sentence: "We also detected carbon dioxide because it put out the flame."
  6. "When you observed the weight it had change."

    • Explanation: “It had change” should be “it had changed.” We also need a comma after "weight."
    • Corrected Sentence: "When you observed the weight, it had changed."
  7. "Before heating the baking soda + tube was 52g."

    • Explanation: Adding “the” before “baking soda” makes the sentence clearer.
    • Corrected Sentence: "Before heating, the baking soda + tube was 52g."
  8. "But after heating it's weight 39g."

    • Explanation: “It’s” should be “its” because we’re showing possession (its weight). Also, “was” should replace “weight” for clarity.
    • Corrected Sentence: "But after heating, its weight was 39g."
  9. "It became 5g lighter than before."

    • Explanation: This sentence is correct as is. It’s clear and simple.

Revised Text:

You can start the experiment when the materials are set up. First, we put some baking soda into the test tube. Then we observed it as it was heated for about 10 minutes over the alcohol lamp. We could see moisture or water vapor in the container. We also detected carbon dioxide because it put out the flame. When you observed the weight, it had changed. Before heating, the baking soda + tube was 52g. But after heating, its weight was 39g. It became 5g lighter than before.


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