Dear Ruweydha,
Please refer the note and do the questions attachced-https://www.asleenonline.com/wp-content/uploads/2026/06/Energy-Change-in-a-System-F-QP.pdf
Question paper 2 nd marking scheme–https://www.asleenonline.com/wp-content/uploads/2026/06/Energy-Change-in-a-System-H-MS.pdf
Note-https://www.asleenonline.com/wp-content/uploads/2026/06/Energy-1.pdf