density

What is density

What is it measured in

How much mass a substance has per unit of its volume

Kg/m3

g/cm3

How do you calculate the density of a solid experimentally

-find mass- play solid on balance and measure the mass

-find volume-depends on if it’s a regular or ifregular shape

If regular shape – we can find the volume by timing length x width x height

If irregular – need to find the volume using Eureka can filled with water and an empty measuring cylinder

The Eureka can has a outlook which allows water to float out and be collected by measuring cylinder meaning as long as it’s filled to the outlet when we add solid substance to eureka can the volume of water exactly equal to that solid volume

– Now we have mass and volume so use the equation and sub in the values

How do you find density of liquid experimentally

– Place an empty measuring cylinder onto balance , then pour some liquid into cylinder and record mass of liquid. The divide mass by volume to get the density.

How to make results more accurate when measuring density

The larger the volume you measure the more accurate identity will be because it minimise the effect of uncertainty of taking measurements

Can also take more measurements to identify any anomalies and also calculate a mean

What is the difference in density between solids liquids and gases

Solids are generally the densest because their particles are tightly packed in a fixed structure, followed by liquids where particles are close but can move past each other, and finally gases, which are the least dense due to particles being very far apart with lots of empty space