Rate of reactions and organic compounds

Yesterday in class we went over our rate of reaction sheets and compared the results of our experiments. Then we discussed the questions on the back. After this we finished and went over our organic compounds sheet. We also got our final exam outline it tells you what questions there are going to be for each unit and the terms and concepts that you need to know. Also Mr. Banow showed us how to find the answers to the chemical reaction review and the other review on the blog.

Quiz and Experiment

Today we began class with a short little quiz on writing and naming formulas which we were working on for the past week. The quiz also included balancing equations from last week.

We then moved into an experiment called the Rate of Reactions. It included an Alka-Seltzer tablet, different water temperatures(cold, medium and hot), film canister, beaker(cup) and a graduated cylinder. The goal was to determine if different water temperatures or surface area of the tablet effected how fast the lid exploded off. We recorded our observations in a chart, and were asked questions such as the effect the water temperature and volume had on the experiment. Our group determined that the quickest reaction occurred when there was a high level of hot water and when the tablet was in one piece(not crushed). The only trail that did not produce a result was the cold water.

Balancing Equations Day

In today’s class we first started off by going through a couple of questions on a booklet that we got the previous day called Balancing Chemical Equations , we then were told about the quiz that will be on Monday and we went through what would be on it. Then we got a worksheet that had 6 questions on balancing chemical equations to do for practice. At the end of class we were told to read pages 205-207 in the Science Text Book, and answered questions on a page called Organic Compounds.

Final Exam: Missing Review Materials

If you are missing any of the review materials for your final exam, you will find them below:

• Motion Review
• Chemical Reactions Review
• Biodiversity Quiz
• Population Dynamics Quiz

If you need to check your answers, search the main blog for the answer keys or come and see me.

Good luck and good studying!

Chemisty Review Sheet

Today in class we began with going over the nitrogen cycle handout we needed to have filled in. After going over all the questions and answers, we had a short, open-book quiz on the nitrogen cycle worth seven marks.

Afterwards, we went over the Chemical Reactions Previous Knowledge Review sheet. We were given this sheet at the beginning of our new unit called Chemical Reactions. We reviewed how to find the the atomic number, amount of protons, neutrons, electrons, and if it is a metal or non-metal for the elements on the periodic table. We then went over how a physical change and a chemical change are different. Physical changes are reversable, while chemical changes are not.

Also on the review sheet is listing physical properties. Some of these are density, volume, boiling point, state (gas, liquid, solid), freezing point, and melting point.

Before beginning to list indicators of a chemical reaction, we went outside to see a chemical experiment by Mr. Toogood. These experiments were to help us identify some of the obvious indicators of a chemical reaction occuring. Indictaors we identified from the experiments were change of colour, different odor, heat and light being given off, new substance being formed, and the emission of gas. We ended the class by going over these indicators.

Next is Colin.

carbon and nitrogen cyles

today in class we began by reviewing what we did on the last day of classes before the break. after that we continued to finish the assingment we had before the break which was Carbon/Oxegen Cycle. (we will be going over this tomorrow)

we watched a short video on carbon cycle, while the class finished up an assingment. we then went over what we are doing tomorrow and correcting both assingments we did

next is brodie

Predator-Prey Interactions

Yesterday in class we recieved 2 sheets. One of them was called Carrying capacity. Carrying capacity is how many organisms can survive in an ecosystem. The other sheet was called Predator-Prey Interactions. On that sheet it told us that one species of animal can effect another population of animals.

Today in class we went over the questions on the Predator-prey interactions. We discussed ways in which the deer/wolf population could increase/decrease. For example, when the deer population would go up so would the wolf population a year later because there would be enough food for it. If the deer population went down so would the wolf population since there wouldn't be as much food. (see picture below)

Later in class, Mr. Banow gave us a sheet similar to the Predator-Prey Interactions sheet for marks. On this sheet we had to make a graph and answer the questions on it. We also found out we will be having a quiz tomorrow on limiting factors, ranom sampling, mark recapture method, and carrying capacity.

Next will be Shelby