Lesson 9

• Nask
• Middelbare school
• havo, vwo
• Leerjaar 2

Density

This lesson

• 8.6 Pressure, volume and temperature
  
• Density
  
• Sinking and floating
  
• Working independently

Learning goals

• Explain the concept of density in your own owrds
  
• Name the formula for density
  
• Be able to do density calculations
  
• Describe solids, liquids and gasses in terms of density
  
• Explain why some objects sink and other objects float
  

Pressure, volume and temperature

Link

Density

Which box is denser?

A

B

Density=​volume​​mass​​

Density=​volume​​mass​​

ρ=​v​​m​​

ρ: density – g/cm3, kg/m3

m: massa – g, kg

v: volume – cm3, m3

Density exercise

Exercise 1) A rectangular block of copper has a mass of 1896 g. The dimensions of the block are 8.4 cm by 5.5 cm by 4.6 cm. From this data, what is the density of copper?

Exercise 2) A block of ice has a volume of 980 cm³. The density of ice is 0.917 g/cm³. Calculate the mas of this block of ice.

What makes objects 

float or sink?

Link

Objects float on a liquid if they are less dense then that liquid

Objects sink into a liquid if they are denser then that liquid 

Learning goals

• Explain the concept of density in your own owrds
  
• Name the formula for density
  
• Be able to do density calculations
  
• Describe solids, liquids and gasses in terms of density
  
• Explain why some objects sink and other objects float