Read Textbook Chapter 17 (17.1-17.6 – the whole chapter)
Answer questions at end of chapter (Restate question – Full sentences):
Review Q: 2, 3, 4, 5, 8, 13, 14, 17, 19, 20
Exercises 3, 7, 8, 9, 11, 15
No SQuARES requirement
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Got a nasty cold once again, but I’m back in business. Freshmen nearly finished the survey of elements with the demonstration of sodium and water, which makes for some interesting flames and pops. We planned to deminstrate liquid nitrogen tomorrow, but it won’t be available until next week, so tomorrow we will start with the Bohr model of the atom and begin to learn how electrons are structured in the atom. In 8th grade, we wrapped up Inquiry 4.2, in which we discovered that the mass of a substance (salt) does not change when it is dissolved in water. This is a demonstration of conservation of mass. We’re going to do Inquiry 18 starting tomorrow, in which we investigate what happens to the temperatures of boiling water and to ice when salt is added. After that we’ll review for the district assessment and finish Properties of Matter with the test after Mid-Winter break. Then on to Earth in Space! Sorry I haven’t posted enough the past couple of weeks. I will rectify that situation as of today. Freshmen started a new unit with the new semester… Chemistry! I love teaching this unit, and the students always seem to enjoy it as well. For any of you who know a thing or two about the subject, here’s a brief overview of what we cover: Atomic structure, the periodic table with a survey of several elements, Bohr model diagrams, electron energy levels, valence electrons, ionic bonding and how to find valence with the periodic table, covalent bonding, lewis dot diagrams, chemical equations, balancing equations, reaction types and probably acids and bases. We may add more if we have time. We do NOT cover mole concepts, leaving that for full-year HS chemistry. Right now we’re learning how to read the table to find basic information about each element. 8th graders just finished a solubility lab, and we will hopefully wrap up the Properties of Matter unit with the district assessment in about 2 weeks, then move on to Earth in Space. We’ve been busy! 8th graders just turned in conclusions from Inquiry 25, on conservation of mass. Today we wrapped up Inquiry 11 (yes, we do them out of order sometimes) which asked students to identify whether several substances were either pure or mixtures. Freshmen worked on their Electromagnetic Spectrum projects. This will be due next Tuesday. There will be a quiz on the waves mini-unit, and then it’s on to chemistry! 9th Grade File: Creative Project The Electromagnetic Spectrum Described
This is the toughest week of the year. Everyone seems sluggish on this week after the holiday break. But we’ve kept busy. Freshmen are studying waves, after wrapping up the energy unit. I’m attaching notes on waves in the form of a powerpoint. Download it if you missed them from class. 8th graders did Inquiry 25, in which we checked to see whether the mass of a bottle, water, and fizzing tabled changed after the tablet fizzed in the closed bottle. Conclusions are due tomorrow. Here are the Freshman wave notes:
Here are the Insulator Lab descriptions and requirements, and the lab report scoring guide (links at end of this post). USE THESE DOCUMENTS to guide you! They are the key to an A! If you cannot log in to turnitin.com, you need to fix this right away. Get help if you have trouble. Technology excuses will not be accepted!
Internet access here has been S L O W. So slow it was pretty much impossible to post all last week. It’s still slow, but it seems to work (I hope). So, a quick update: 8th grade is working on Inquiry 8, in which they freeze water to see if phase changes affest mass. Today they got their procedures and data tables written. I had most students do multiple rewrites. They’ll do the lab tomorrow and Thursday. Freshmen are testing their second insulators in the end of the Insulator Lab. Then they get the rest of the week to write lab reports. This is their biggest assignment of the year, points-wise. 85 points! The report is due at 11:59 PM on January 4, and will be turned in on turnitin.com.
Due Thursday, 12/4: Read Chapter 9, sections 9.1-9.6 (9.7 recommended) Do Review Questions 1-4, 7-14 Do Exercises 1, 3,
8th graders today made posters diagramming the different kinds of phase changes matter undergoes and shpwing the arrangement of atoms or molecules in each phase. Today was the introduction to thermal energy for Freshman science. They saw a video about heat, and then we reviewed the last district assessment. I am scheduling the next test for this Friday. Then, next Monday, we begin the INSULATOR LAB!
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