Chemistry 8-31-17 Using Density

CHEMISTRY – Hey guys, here’s a pic of some “high density” koi that I saw in Hawaii (at the Dole Pineapple Plantation, of all places!). Great review on density problems today, and more! Remember, in chemistry we use math as a tool, therefore we might work problems a little differently in chemistry than you do in your math class.

When working these problems, don’t forget to follow the problem solving steps we discussed today:

  • Analyze – write down what you’re given and what you’re looking for
  • Plan – write a formula where you isolate the unknown on one side by itself
  • Compute – plug in your data, numbers and units; then cancel the units, and if they cancel correctly, go on to the calculator. Be sure and give your answer what the correct units.
  • Evaluate – does your answer make sense, have you used the correct units, do you have the correct sig figs?

On a more practical side – and even better(!), can you now use what you’ve learned about density? Be sure and print the lab for tomorrow – thLAB: Building Your Balance.

Can’t wait to “watch” you work!

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37 thoughts on “Chemistry 8-31-17 Using Density

  1. I would rate this week a 3/5. I’m making careless mistakes a bit too often, so I’m going to try being steady with my work. I really need to go at a more controlled pace. I did make a decent grade on my test though, so I’m happy about that.

  2. I would rate myself as 4/5 this week because I have been able to finish most of my SI measurements and feel okay about all the tests I have taken and I am starting to get into the swing of things but still need to calm down and pay attention more.

    • I am starting to try and do what my teachers say and thinking of calming things but also paying attention and doing my best on the work I need to get finished. cont. from first 4/5 post to make sure!

  3. This week in chemistry was a lot tougher than the past because we learned so much new information. I rate myself 4/5 this week in chemistry because I missed one day, but I watched the podcast so i was all caught up.

  4. A triumph for this week would be my test grade being higher than I expected. There is still room for improvement as always but it’s not a bad starting point for the year.
    Ben Roberts C3

  5. I rate myself a 4/5 this week in chemistry. I feel like i triumphed on taking notes, studying, and setting up my balance. A struggle was getting my homework done because i forgot to finish a couple problems. I am curious to see what the next week in chemistry will bring.

  6. I would rate myself a 4/5 this week because I did well on my test but I fell like I could have done better on my lab measurements but I will try to improve that over time.

  7. I would rate myself a 4/5 this week. I got all the notes but I need to practice more. Also I did well on my test but I should have studied more for the quiz.

  8. I rate myself 4/5 for this week. I struggled in the take home lab (building the balance), but I have not procrastinated on the scavenger hunt and I have stayed on top of my work!

  9. I would rate myself a 4/5 this week I feel like I did very well on the home work this week and paying attention in class the only thing I struggled with is the building your balance lab

  10. This week I rate myself a 3/5. Overall I understood the new lesson you taught us. The thing I struggled with was the lab today.

  11. This week I rate myself a 3/5. The Si units took some time for me to get but once I got the concept it was understandable. Im also getting more comfortable in your class. The only thing I struggled with is the lab that we did today, that was a true test.

  12. I would rate myself a 3/5 this week. I feel like I could have done a lot better on the SI unites quiz if I would have studied longer just not for one day. But I understood everything else this week.

  13. I would rate myself a 3/5 this week. I struggled listening Tuesday because i was so worn out from our retreat and I didn’t do all my homework. However the past two days I would say has been a triumph bc i was able to take good notes and complete my lab.

  14. I rate myself 3/5 I did very good on the quiz but I still think I need some work on the meanings. My notes weren’t as good and I didn’t really understand at first, but with the help from Matthew I understand now. I also don’t think I did good with today’s Lab. Other than those couple of things I think this week turned out good.

  15. I consider this week a 3/5 because I didn’t properly prepare for the SI Unit quiz and made a grade I’m not entirely proud of… However, I did today’s lab with ease, and my measurements were very accurate!

  16. I would rate myself a 3/5 because I did not study as well for the SI Unit quiz as I should of, but I think im starting to figure out how the “Building Your Own Balance” Lab from today!

  17. This week i would rate myself a 3/5. I did good on notes and understood everything. I struggled today on the balancing lab. I am doing good on my scavenger hunt that should be a good grade.

  18. I would rate myself a 3/5 this week. I did not do as well on the quiz as I thought. I did good at listening this week and ateel writing down notes.

  19. I would rate myself a 3/5 this week. I did good at listening and taking notes this week. I am doing good on the scavenger hunt and I hope I can figure out the balance lab.

  20. I would rate myself a 4/5 this week. I feel like I did good with homework and on the quiz, however I struggled with the lab today.

  21. I would rate myself a 3/5 this week. I got a little bit behind on my work and a little confused with my measurements but I figured it out and worked through it.

  22. i would rate this week a 4/5. i studied hard so i did well on my quiz and test. also, i was able to do my lab easily and effectively because i made sure i understood it before. a struggle this week was some of the sig fig calculations. i have to make sure to learn the rules really well if i want that to go smoothly.

  23. I would rate myself a 3/5 this week because I did poorly on the quiz and I know I could have done much better. I feel like I am struggling with the formulas a bit more than I should be, but that can easily be fixed if I study for just a bit longer each night.

  24. I would rate myself a 3/5 because I did all my homework but I didn’t really understand everything that was on the homework. Although, the building your balance lab is coming along pretty good!

  25. This week I rate myself a 4/5. I did really good on my SIG Fig quiz. But I really struggled with my lab today. Hopefully I can finish the lab without too much frustration this weekend.

  26. This week I would rate myself a 3/5. I did not do as well as I thought I would on the sig fig quiz and I also struggled with doing the lab. But I did well on my test.

  27. This week I struggled with staying organized and keeping all my papers together, but now I check to make sure I have everything and I am slowly becoming more organized.

  28. I would rate myself a 3/5 because I did all of my homework, but I didn’t do good on my Sig Fig quiz 1. Also the building your balance lab is looking good.

  29. i would rate myself 3/5 this week. i did not do as well as i would’ve liked on the dig gig quiz. i did feel like i understood the homework though

  30. i would rate myself 3/5 this week. i did not do as well as i would’ve liked on the dig gig quiz. i did feel like i understood the homework though. i also felt like i could’ve done better on the test even though. i made an 80.

  31. This week I rate myself a 4/5. I studied for the quiz ahead of time and made a good grade on it. I also learned how to find density.

  32. I would rate myself a 4/5 for this week. I did good on my quiz but I feel like I could of done better on the test. Also I understood the lessons very well and I did well on the lab.

  33. this week I would rate 3/5. didn’t do so good on the quiz and I realized that I need to study constantly and review over things I need in class more.

  34. i would rate myself a 3/5 for this week. i was easily overwhelmed with homework at the beginning of the week which stressed me out for the rest of the week. the building your balance lab is also very stressful and frustrating but i am hoping to tackle it.

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