Specific heat capacity

• What is specific heat capacity?

  Energy required to raise temperature
• How does temperature relate to energy stored in a substance?

  Temperature indicates energy stored in thermal energy
• What does specific heat capacity relate to?

  Temperature and energy
• What happens to energy when heating a substance?

  It increases the energy in its thermal energy store
• What is the kinetic energy store of particles?

  Energy related to their motion
• What does internal energy refer to in a substance?

  Sum of kinetic and potential energy of particles
• How is temperature used in kinetic theory?

  It measures average internal energy of a substance
• Why do some materials require more energy to increase temperature?

  They have higher specific heat capacity
• How much energy is needed to warm 1 kg of water by 1°C?

  4200 J
• What is the specific heat capacity of mercury?

  139 J/kg°C
• What is the relationship between energy change and temperature change in a substance?

  Energy change relates to specific heat capacity and temperature change
• How do you calculate the change in thermal energy?

  • Use the formula:

  $\Delta Q =$$m \cdot c \cdot \Delta \theta$

  • Where:
  • $\Delta Q$ = change in thermal energy (J)
  • $m$ = mass (kg)
  • $c$ = specific heat capacity (J/kg°C)
  • $\Delta \theta$ = temperature change (°C)
• What is the specific heat capacity of water?

  4200 J/kg°C
• What factors affect the specific heat capacity of a substance?

  • Type of material
  • Molecular structure
  • Phase of matter (solid, liquid, gas)
• How does specific heat capacity influence heating and cooling of materials?

  Higher specific heat means slower temperature change
• What is the significance of knowing specific heat capacity in practical applications?

  It helps in designing heating and cooling systems
• What is the formula for specific heat capacity?

  c = ΔQ / (m * Δθ)
• Why is water's specific heat capacity considered high?

  It requires a lot of energy to change temperature
• How does specific heat capacity affect climate and weather patterns?

  It influences temperature regulation in environments
• What is the unit for specific heat capacity?

  J/kg°C
• What can you find using the experiment mentioned?

  The specific heat capacity of water
• What is the purpose of the experiment described?

  • To find the specific heat capacity of water
  • Can be used for any liquid
  • Requires insulated container to reduce energy loss
• What should you use to reduce energy waste in the experiment?

  An insulated container
• What is the first step in the experiment?

  Use a mass balance to measure the mass
• Why is it important to measure the mass of the insulating container?

  To calculate the specific heat capacity accurately
• What should you do after filling the container with water?

  Measure the mass of the water again
• What is the difference in mass used for?

  To find the mass of the water
• What is the next step after setting up the experiment?

  Measure the temperature of the water
• What should you do when the temperature increases by a certain amount?

  Stop the experiment and record energy
• What should you do after recording the energy supplied?

  Calculate the specific heat capacity
• How many times should you repeat the experiment?

  At least three times
• What is the purpose of averaging the results?

  To improve accuracy of specific heat capacity
• What equipment can be used in the experiment?

  • Joulemeter
  • Power supply
  • Thermometer
  • Insulated container
• What is the role of the joulemeter in the experiment?

  To measure the energy supplied
• What alternative method can be used instead of a joulemeter?

  A voltmeter and ammeter
• Why is it important to know how long the heater was on?

  To calculate the energy supplied accurately
• What is a potential issue with the specific heat capacity?

  It can be low
• What should you ensure while conducting the experiment?

  • Use accurate measuring instruments
  • Follow the procedure carefully
  • Record all data systematically
• What is the final step after completing the experiment?

  Calculate the average specific heat capacity
• What is the significance of practicing the experiment?

  To ensure accurate and reliable results