| How many atoms can fit inside a Centimetre? | 100,000,000 |
| Equation for Density | Density = Mass ÷ Volume (OR) P = m ÷ V |
| What is Density?
What is the Density of: Iron, ice, water & air? | The amount of mass per unit volume it describes how closely packed the particles are in a solid, liquid or gas and depends on:
- The state of matter
- The material |
| How do you Calculate Volume of a: Cube, Sphere, Cylinder & Cone? | View image: |
| PRACTICAL: Density - Regular solids | 1) Use a ruler to measure the length (l), width (w) and height (h) of a steel cube/Use vernier callipers to measure the diameter of the sphere.
2) Place the steel cube/metal sphere on the top pan balance and measure its mass.
3) Calculate the volume of the cube using (l × w × h) / sphere - (4÷3)πr³
4)Use the measurements to calculate the density of the metal |
| PRACTICAL: Density - Stone/Irregular solids | 1) Place the stone on the top pan balance and measure its mass
2) Fill the displacement can until the water is level with the bottom of the pipe
3) Place a measuring cylinder under the pipe ready to collect the displaced water
4) Carefully drop the stone into the can and wait until no more water runs into the cylinder
5) Measure the volume of the displaced water
6) Use the measurements to calculate the density of the stone |
| PRACTICAL: Density - Liquids | 1) Place the measuring cylinder on the top pan balance and measure its mass
2) Pour 50 cm3 of water into the measuring cylinder and measure its new mass
3) Subtract the mass in step 1 from the mass in step 2. This is the mass of 50 cm3 of water
4) Use the measurements to calculate the density of the water |
| What is the Equation for Density | density = mass ÷ volume |
