I know that I sound redundant when I add to the blog, "It was a great day in lab today!" But it was a great day - one of my favorites so far. We began the day with a t-chart for classifying properties as either physical or chemical as our bell ringer. Once we finished reviewing, we took a quiz on sections 2.1 - 2.3. Following the quiz, we reviewed chemical changes and the indicators of a chemical reaction. One of our goals for today's class was to apply the indicators of a chemical change in the lab setting. As you can see from the picture, we definitely saw color changes, precipitates, and even some gas bubbles forming. I truly appreciate the cooperative atmosphere during lab times with everyone. A second goal for today was to learn how to apply the Law of Conservation of Mass to a chemical reaction. Remember to treat the arrow as if it was an equal sign, the mass of the reactants must equal the mass of the products. What goes in must come out - it can be rearranged but it still must be there. Tonight for homework - please complete lab questions #'s 1, 4-8, 10, 12, and 13. Also please read sections 4.1 and 4.2 and outline the reading. finally don't forget to do the visualization exercise. Progress reports will be uploaded on Friday. Unit 2 test will be September 28th. We will complete chapter 4 - Thursday and Monday of next week. We will have lab activities with non-hazzardous materials both Thursday and Monday. Enjoy the beautiful weather - I think a cold front might be moving into our area.
Mrs. E
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