Form 1: Deep Voice Gas

Hey Form 1 students, here's the last video that we saw today.

Remember, get the materials ok? We're gonna do that density column next Tuesday.

Cheers.

Form 1 Project: Density Column

This is a project that the Form 1 students will be taking part in.
We will be recreating the 9 layer density column that we say on Steve Spangler's Sick Science videos.

Students will be bringing materials from home to create this column.

Materials:
1. Lamp Oil - Juliana
2. Rubbing Alcohol - Ben
3. Vegetable Oil - Huai
4. Water - Ben
5. Dish Soap - Dim Dim
6. Milk - Lun Sian Ciin
7.  Maple Syrup - Ben
8. Corn Syrup - Ben
9. Honey - Michael
10. Ping Pong Ball - Aung Paye Sone
11. Soda cap (plastic bottle) - Lian Sian Khai
12. Beads - Lal Din Pui
13. Cherry Tomato - Ben
14. Dice - Emily
15. Popcorn kernel - Chris
16. Screw - Thang Sian Kop
17. Glass container - Ben

16th September is a public holiday, so there is no school for you guys. However, you should use this time to find the materials so that we can do this density column next Tuesday. If you can't find the materials, please notify me (Ben) before Sunday or else we would not be able to do this activity.

Lets do this together!!!

Cheers.

Form 1: Contraction and Expansion of Matter

Contraction and expansion of matter occurs everyday around us. We don't observe it enough, but it is happening.

1. Changes in states of matter (freezing, melting, condensation, evaporation, sublimation, boiling) all involves heat transfer.
2. Heat transfer will cause matter to contract or expand. When matter gains heat, it expands. When matter loses heat, it contracts.
3. Matter expands because when it gains heat, its kinetic energy will increase. When kinetic energy increase, it moves faster. When it moves faster, it will move further apart and take up more space.

As shown in class today, these are the videos:

To recap what was shown in the second video, liquid nitrogen is verrrrrrrry cold. Its boiling point is very low, hence it is boiling at room temperature (the temperature of your surrounding in a room). Liquids DOES NOT have to be hot to boil, it will boil when it has enough energy to break the forces of attraction and become a gas (remember the puzzle we did).

If you have any questions, please post a comment.

Cheers.