Unit 1 – Some Basic Concepts of Chemistry – Exercise

Important formula Density of a substance tells us about how closely its particles are packed. If density is more, it means particles are more closely packed. Density = Mass / Volume SI unit of density = SI unit of mass/ SI unit of volume = kg / m³ or kg m-3 There are three common scales to measure temperature — °C (degree celsius), °F (degree fahrenheit) and K (kelvin). Freezing point of water 0°C Boiling point of water 100 °C The temperatures on two scales are related to each other…