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| style="height:20px; width:200px; text-align:center;" |[[Solid]]s are the most '''dense ''' [[State of Matter|state of matter]] because there are a large number of [[particle]]s in a certain [[Volume (Space)|volume]] and [[gas]]es are the least '''dense''' [[State of Matter|state of matter]] because there are a small number of [[particle]]s in a the same [[Volume (Space)|volume]].

:<math>\rho = \tfracfrac{m}{V}</math> 

: ρ = The [[density]]of the [[object]].: m = The [[mass]]of the [[object]].: V = The [[Volume (Space)|volume]]taken up by the [[object]].

| style="height:20px; width:200px; text-align:center;" |'''5000[[kg]] 5000kg of [[Iron]] has a [[Volume (Space)|volume]] of 0.635m²³. Calculate the density of [[Iron]].'''| style="height:20px; width:200px; text-align:center;" |Text'''A 50,000cm³ container of [[water]] is full with a 50kg [[mass]] of [[water]]. Calculate the density of [[water]].'''| style="height:20px; width:200px; text-align:center;" |Text'''A 200,000cm³ [[Volume (Space)|volume]] of [[air]] has a [[mass]] of 245g. Calculate the density of [[air]].

| style="height:20px; width:200px; text-align:centerleft;" |[[Mass]] = 5000[[kg]]5000kg

:<math>\rho = \tfracfrac{m}{V}</math> :<math>\rho = \frac{5000}{0.635}</math> :<math>\rho = 7874kg/m^3</math>| style="height:20px; width:200px; text-align:left;" |[[Mass]] = 50kg [[Volume (Space)|Volume]] = 50,000cm³ = 0.05m³ :<math>\rho = \frac{m}{V}</math> :<math>\rho = \frac{50}{0.05}</math> :<math>\rho = 1000kg/m^3</math>| style="height:20px; width:200px; text-align:left;" |[[Mass]] = 245g = 0.245kg [[Volume (Space)|Volume]] = 200,000cm³ = 0.2m³ :<math>\rho = \frac{m}{V}</math> :<math>\rho = \frac{0.245}{0.2}</math> :<math>\rho = 1.225kg/m^3</math>|} ==Key Stage 4=====Meaning===[[Density]] is the amount of [[mass]] per [[unit]] [[Volume (Space)|volume]] of an [[object]]. ===About Density===: The [[SI Unit]] of [[density]] is kg/m³.: [[Density]] is a [[scalar]] quantity as it has [[magnitude]] but does not have a direction.: An [[object]] with a large amount of [[mass]] in a small [[Volume (Space)|volume]] is said to have a high [[density]].: An [[object]] with a small amount of [[mass]] spread over a large [[Volume (Space)|volume]] is said to have a low [[density]].

===Finding the Density=======Finding The Density of a Regular Object====:<math>\rho = \tfrac{5000}{0A regular [[object]] is a [[solid]] in the shape of a cuboid.#Measure the [[mass]] of the cuboid using an [[Electronic Balance]] or [[Measuring Scale]].#Measure the length, width and height of the cuboid.#Multiply the length, width and height to calculate the [[Volume (Space)|volume]].#Divide the [[mass]] by the [[Volume (Space)|volume]] of the cuboid to calculate the [[density]].635}</math>

====Finding The Density of an Irregular Object====:<math>\rho = 7874kg/m³</math>An irregular [[object]] is a [[solid]] whose shape prevents the sides being measured by a [[ruler]].#Measure the [[mass]] of the [[object]] using an [[Electronic Balance]] or [[Measuring Scale]].#Fill a [[Measuring Cylinder|measuring cylinder]] with enough [[water]] to submerse the [[object]].#Take a reading of the [[Volume (Space)|volume]] of [[water]] in the [[Measuring Cylinder]].#Place the [[object]] in the [[Measuring Cylinder]] and ensure it is submersed.#Take a reading of the [[Volume (Space)|volume]] of [[water]] + [[object]] in the [[Measuring Cylinder]].#Subtract the [[Volume (Space)|volume]] of [[water]] from the [[Volume (Space)|volume]] of [[water]] + [[object]] to find the [[Volume (Space)|volume]] of the [[object]].#Divide the [[mass]] by the [[Volume (Space)|volume]] of the [[object]] to calculate the [[density]]. {| styleclass="height:20px; width:200px; textwikitable"|-align|[[File:ParticleModelSolidLiquidGas.png|center;" |Text500px]]|-| style="height:20px; width:200px; text-align:center;" |Text[[Solid]]s are the most '''dense''' [[State of Matter|state of matter]] because they have the largest amount of [[matter]] per unit [[Volume (Space)|volume]] and [[gas]]es are the least '''dense''' [[State of Matter|state of matter]] because they have the smallest amount of [[matter]] per unit [[Volume (Space)|volume]].