a) Solid: Particles are packed closely together in a regular lattice structure. They vibrate in fixed positions. b) Liquid: Particles are close together but arranged randomly. They can move past each other. c) Gas: Particles are far apart and arranged randomly. They move quickly and randomly in all directions.
QUESTION (4 marks) Describe a test to distinguish between ethane and ethene gas. Include reagents, observations, and equations. igcse chemistry questions and answers pdf
Preparing for the IGCSE Chemistry exam requires a strategic approach to mastering complex concepts like stoichiometry, organic chemistry, and chemical energetics. Using a comprehensive is one of the most effective ways to identify recurring exam patterns and refine your response technique. a) Solid: Particles are packed closely together in