Practicals P1 - P8 Flashcards
List the equipment required for a practical measuring the density of an irregular shape.
- Eureka can
- Measuring cylinder
Describe how to carry out the density practical for an irregular shape.
1) Fill the eureka can with water so that the object is fully submerged in water.
2) Place a measuring cylinder under the eureka cans spout to collect the displaced water.
3) The water will slowly displace out of the eureka can and will collect into the measuring cylinder. The volume of water displaced = volume of the shape.
4) Measure the mass using a mass balance
5) Use d = m/v to find the density.
List the equipment required to carry out an experiment to find the specific heat capacity of a substance.
- Mass balance
- Insulating container (and lid) packed with cotton wool for insulation to prevent energy loss
- Thermometer
- Metal cylinder for solid and electric heater for liquid.
- Power supply (either joulemeter or ammeter and voltmeter.)
Describe how to carry out the practical for finding the specific heat capacity of a substance.
1) Measure the mass of the substance using a mass balance.
2) Measure the temperature of the substance before providing with power supply.
3) Note the power supplied and then turn the power on.
4) Once it has increased by a number (e.g. 10 degrees C), turn the heat off.
5) Place numbers into equation. E = mc(theta)
What equipment is needed to investigate Hooke’s Law?
- Spring with hook
- Weights
- Clamp
- Ruler/metre stick
Describe the process involved in investigating Hooke’s law.
1) Weigh masses and add them one at a time to the hook
2) Measure the extension
3) Plot graph.
When conducting the practical for IV graph tests what should you be wary of?
- If resistance is increased very high then the circuit may get hot affecting results, so disconnect the power supply and let it cool down.
How should the circuit for IV graph practical be set up?
- Ammeter in series in main circuit
- Voltmeter in parallel with testing component.
