Density

• Density tells you how much mass there is in a certain volume. If you have 2 different sizes block made of the same material the density of the blocks are the same no matter the sizes.
• Density is a property of a material not or an object. The mass of a block depends on its volume
• Density (kg/m³) = mass (kg) ÷ volume (m³)
• In 1cm ³ of a substance in the solid state there are more particles than in 1 cm ³bof the same substance as a gas.
• The density of a substance in liquid and solid states are more similar to each other than they are to the density of the same substance as a gas.
• Density does not depend only on the particl arrangement but also the article mass
• You don't have to add or remove material for the mass to change. Particles do not appear or disappear. This is the law of conservation of mass
• In state changed particles do not disappear
• The mas of 1m cubed of water is 1000kg
• The mass of gold is 32000kg per m cubed
• The mass of 1m cubed of air is 1.3 kg
• The base units to always use are MKS=meter, seconds, kilograms
• To find the density of an irregular shaped object, you measure the level change when the object is placed into the liquid or you use a eureka can and the amount of water displaced is the volume.