Tuesday, November 22
Crystal growing labs are requiring completion – please check your crystal growth over lunchtime. Currently, at room temperature the following growth has been observed with the following solutions:
- Copper Sulphate: 0.8 mm per day @ 23 C (average)
- Chrome Alum: 3.5 mm per day @ 23 C (average)
- Cobalt Sulphate: 1.2 mm per day @ 23 C (average)
- Borax: ~ 5-10 mm per day @ 23 C (average)
Higher temperatures help to start off the crystallization process and once cooled to room temperatures crystals will start forming. This is due to the inability of the water to hold the given amount of salt in solution. Each chemical is unique and has a particular solubility level. Generally, water temperature effects the amount of salt that can be added. The higher the water temperature the greater the amount of salt you can add. However, there will be a point at which no more salt can be added. We call this a super saturated solution.
You’ll also need to observe your crystals under the microscope and draw them out. What crystal structure type does your crystal belong to?
We will be getting into the new unit – Electricity
What do you know already about Electricity?
- What is Voltage?
- What is Current?
- What are electrons?
- What is resistance?
- What is the difference between static electricity and the electricity as found in your home?
Monday, November 21
Applied Technology 7
Let’s launch those remaining large rockets if the weather cooperates. It’s our last week together!
Our smaller rockets can be done on Wednesday. CO2 cars will happen once I get the radar gun this week. We could launch them down the corriodor beside the shop for time trails. Then later on, once the competition launcher becomes avalible we will have our top competitors battle it out for 1st, 2nd and 3rd place.
Wood Working 8-1, 8-2
Last day for all projects. Marks have been updated. Please check in with me if you need information or are looking for that last project to work on. I do need help cleaning up and cutting wood for Grade 6 students cutting boards
Applied Technology 6-2
Cutting boards made from amazing hardwoods are being fabricated all this week!