9. Which of the following statements is true regarding a decomposition reaction? a) A single reactant breaks down into two or more products. b) Two or more reactants combine to form a single product.

CBSE 2024-25 Competency-Based Questions With Answers: As students prepare for the CBSE Class 10 Science exams in 2025, understanding chemical reactions and equations is essential. This topic explains ...

Students will face more competency-based questions, including case studies, data interpretation, source-based items, and ...

Note: This video is designed to help the teacher better understand the lesson and is NOT intended to be shown to students. It includes observations and conclusions that students are meant to make on ...

This module teaches fundamental concepts in chemical kinetics for General Chemistry using examples of water quality and water treatment. Key chemistry topics include concentration vs. time data; rate ...

Melting and freezing are both physical changes, which are often easy to reverse. To reverse this process, the water would need to be cooled enough until it freezes back into ice. This works because ...