Classified past paper of Unit 5: Solids, Liquids and gases. EDEXCEL IGCSE past papers for code 4PH1/4PH0. The paper has question from paper 1 and 2 from higher tier. UNIT 5: Solids, Liquids and gases, classified past papers link for download is given below: Download past paper here. Marking scheme is available for free download just comment and get Marking scheme emailed to your inbox within 24-48 hours. Notes can be found on this link in PDF format. Visit notes page Here Mainly covering: Density: Concept and formula related questions,Develop relationship between Density, volume and mass using formula (Density= Mass/Volume). Experimental questions related to density measurements of regular and irregular solids. Understand different equipment needed ; Electronic balance,vernier calipher and test-tube filled with water-(for measuring volume of irregular solids),If there is more information needed on this topic,Feel free to visit the notes page to understand more detailed experiments....