Density and gas motion and pressure P6 0.0 / 5 ? PhysicsMolecules and matterGCSEAQA Created by: person_oneCreated on: 12-04-21 15:17 Define denisty density - mass per unit volume 1 of 13 Write out the word equation for density density = mass/volume 2 of 13 Write out the symbol equation for density ρ = m/V 3 of 13 What is mass measured in? Mass is measured in kg 4 of 13 What is volume measured in? Volume is measured in m³ 5 of 13 What is density measured in? Density is measured in kg/m³ 6 of 13 Which state of matter usually has a high density? (name two) - solids - liquids 7 of 13 Which state of matter usually has a low density? Gases 8 of 13 Why do solids and liquids usually have a higher density? They usually have a higher density because the particles are close together so they have a lot of mass for their volume 9 of 13 Why do gases usually have a lower density? They usually have a lower density because the particles are further apart so they have a small mass for their volume 10 of 13 Does density increase or decrease if volume increases? Density decreases when volume increases (if the mass is kept the same) 11 of 13 Does density increase or decrease if mass increases? Density increases when mass increases (if the volume is kept the same) 12 of 13 What happens to the mass of a substance when it changes state and why? The mass is conserved (it stays the same) because the number of particles in the substance doesn't change 13 of 13
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