Why is the joule not used as a unit of the total electrical energy used in an average household?
Joule is a very small unit for household electrical consumption and the numbers will become very large for calculation. It will be more convenient to calculate total electrical energy used in an average household using kWh.
The links of these videos are shared in the sec 1 notes on Chapter 3 - Exploring Diversity of Matter by its Chemical Composition. Here are the YouTube videos on compounds for easy access.
Slide 16 (one video on chemical reaction to form a compound)
Slide 17 (two videos on more chemical reactions to form compounds)
This video was shown in 1B today when we were going through the differences between metals and non-metals (Chapter 3: Exploring Diversity of Matter by its Chemical Composition).
What is the significance of Total Defence for Singapore?
Why is Total Defence important?
LEARN FROM IT
What values and attitudes are essential in keeping Singapore safe and secure?
DO IT BETTER
As we pursue our personal aspirations, what can we do for our family / school / community for Total Defence?
Please do your reflection in the last two pages of your CCE Reflection Journal.
Updated on 16 February: Did you hear the sirens sound off at 6:20pm yesterday? Do you know why the sirens went off at 6:20pm?