Grade 9 Semester 1 Revision!!
Extension from G8 CIE Checkpoint Revision #1 with replacement of 25 questions that cover grade 9 physics and chemistry topics
Highly recommended for G10 and 11 as well!
The presentation covers the following;
1. Basic Calculation of Density
2. Concept of Density
3. (In Lab) Identification of Density of a Known Mass of Solid
4. Explanation on How Heat Affects Density of Air