P3: DENSITY

Question 1

Density equation?

Answer 1

density (kg/m^3) = mass (kg) / volume (m^3) (ρ = m/V)

Question 2

Which of the states of matter is the most dense and why?

Answer 2

-solids
-particles are closest together

Question 3

Which of the states of matter is the least dense and why?

Answer 3

-gases
-lots of space between particles

Question 4

Density practical

Answer 4

-measure mass of object using mass balance
-fill measuring cylinder with water and record volume
-drop object into water and measure increase in water level (this is equal to the volume of the object)
-repeat 3 times and calculate average volume
-work out the density of the object by doing density = mass / volume

Question 5

What are some potential errors in the density practical?

Answer 5

-water splashing out
-parallax error (reading measuring cylinder wrong)