Chemical Reactions - 4/30/17

Weekly Blog : Victor N. 7A

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Summary

This week, we have learned many things. For example, we learned how to balance chemical equations and learned about different chemical reactions. On Monday, we did experiment. We combined baking soda and water together, it became colder. We combined sodium chloride together, it became warmer. When combining the two, it became room temperature. For the next two class periods, we had this worksheet that helped us practice. I learned that you first have to list out the variable, and draw boxes around the chemical formula. In this list, we compare how many atoms on the reactant and the product side. Since I am good at math, it was kinda easy for me to find the greatest common factor. The next two class periods, we did the chemical reactions. We learned about 4 reactions, synthesis, decomposition, single and double displacement. I learned that synthesis is when two or more elements combine into a more complex compound, decomposition is when a single compound breaks into smaller parts, single displacement is when a more active element takes the place of a less active element, and double displacement is when cations and anions of two molecules that are different switch places. On Friday, we also did an experiment. We compound different liquids with different solids, and observed what happened. As you can see, we learned many things this week.

SP5: Using mathematics and computational thinking

This week, I used mathematics and statistics to analyze data when we were working chemical equations. The were unbalanced equations, and we have to make it equal, by making it have the same number of atoms on the reactant side as the products. We do this by seeing the greatest common factor, and choosing a coefficient to make it even. As you can see, this week, I used mathemactice to analyze data.

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