Answer:
Dear [Cousin's Name],
I hope this letter finds you well. I wanted to share with you an exciting experiment that we conducted in my science class recently. We were learning about chemical reactions and our teacher demonstrated the reaction between baking soda and vinegar. It was amazing to see how the two substances reacted and produced carbon dioxide gas, which caused a small explosion of foam.
We then got to conduct the experiment ourselves in groups, and it was so much fun! We had to measure out the right amounts of baking soda and vinegar, mix them together, and watch as they bubbled up and overflowed from our containers. It was a great way to learn about chemical reactions in a hands-on way.
I hope you're settling into your new region well. Let me know if there's anything new or exciting happening with you!
Best regards,
[Your Name]