Podcast
Questions and Answers
What is essential to ensure a correct graph is obtained in the experiment?
What is essential to ensure a correct graph is obtained in the experiment?
- The temperature must remain constant throughout.
- The water must be boiling at all times.
- The plunger must not stick. (correct)
- The air sample must be perfectly sealed.
What does the gradient of the line in the graph represent?
What does the gradient of the line in the graph represent?
- The relationship between length and temperature. (correct)
- The initial length of the air sample.
- The average temperature of the water.
- The change in volume of the air with temperature.
How can the value of absolute zero be estimated from the graph?
How can the value of absolute zero be estimated from the graph?
- By using the highest temperature reading.
- By averaging the lengths measured at room temperature.
- By substituting l = 0 into the equation l = mt + c. (correct)
- By measuring the boiling point of the water.
What should be done to improve the cooling process of the water during the experiment?
What should be done to improve the cooling process of the water during the experiment?
What does the value c represent in the equation l = mt + c?
What does the value c represent in the equation l = mt + c?
What is the formula used to calculate the force exerted by the masses in the experiment?
What is the formula used to calculate the force exerted by the masses in the experiment?
How is the pressure exerted by the force on the air sample calculated?
How is the pressure exerted by the force on the air sample calculated?
What unit is used to express the pressure of the air sample after calculations?
What unit is used to express the pressure of the air sample after calculations?
What should be done to ensure the plunger in the syringe moves freely during the experiment?
What should be done to ensure the plunger in the syringe moves freely during the experiment?
What is the purpose of subtracting the pressure exerted by the masses from standard atmospheric pressure?
What is the purpose of subtracting the pressure exerted by the masses from standard atmospheric pressure?
What is the initial condition of the air sample in the syringe before any masses are added?
What is the initial condition of the air sample in the syringe before any masses are added?
What should be done with the rubber tubing during the setup of the apparatus?
What should be done with the rubber tubing during the setup of the apparatus?
What is the mathematical relationship plotted on the graph after data collection?
What is the mathematical relationship plotted on the graph after data collection?
Flashcards
Plunger Stickiness
Plunger Stickiness
Issue where the plunger does not move smoothly, affecting data accuracy.
Charles's Law
Charles's Law
States that the volume of a gas is directly proportional to its temperature in Kelvin if pressure is constant.
Graph of l vs T
Graph of l vs T
A graph plotting length (l) against temperature (T) to determine gas behavior.
Absolute Zero Estimate
Absolute Zero Estimate
Signup and view all the flashcards
Graph Equation
Graph Equation
Signup and view all the flashcards
Boyle's Law
Boyle's Law
Signup and view all the flashcards
Cross-sectional area (A)
Cross-sectional area (A)
Signup and view all the flashcards
Force calculation (F)
Force calculation (F)
Signup and view all the flashcards
Pressure (P)
Pressure (P)
Signup and view all the flashcards
Standard atmospheric pressure
Standard atmospheric pressure
Signup and view all the flashcards
Initial volume measurement
Initial volume measurement
Signup and view all the flashcards
Graph of 1/V against P
Graph of 1/V against P
Signup and view all the flashcards
Mean volume of air sample
Mean volume of air sample
Signup and view all the flashcards
Study Notes
Boyle's Law Practical
- Equipment: Syringe (10 ml), rubber tubing, pinch clamp, 100 g masses & holder, counterweight (2 kg), micrometer, ruler.
- Procedure:
- Measure rubber seal diameter using micrometer and convert to meters.
- Calculate the cross-sectional area of the seal (A = πd²/4).
- Fill syringe with 4.0 ml of air.
- Attach rubber tubing to the syringe nozzle ensuring a tight seal.
- Secure the tubing with a pinch clamp.
- Add masses to the mass holder and record volumes changes using the syringe scale.
- Repeat with additional masses.
- Repeat entire experiment for a second data set.
- Calculate force exerted by masses using F = mg.
- Calculate pressure exerted on air sample using pressure = Force/Area.
- Convert pressure to kPa.
- Calculate pressure of air sample by subtracting sample pressure from standard atmospheric pressure(101 kPa).
- Plot a graph of 1/V against P (Volume against pressure).
- Ensure graph passes through the origin to minimize errors and calculate the gradient(m)
Charles's Law Practical
- Equipment: Capillary tube, elastic bands, ruler, thermometer, 2-liter beaker, hot water, heat-proof mat.
- Procedure:
- Set up apparatus as shown in diagrams.
- Heat water in the beaker.
- Carefully pour hot water into the beaker to submerge the air sample in the capillary tube.
- Measure temperature(θ) and length(l) of air sample.
- Allow water to cool slowly, taking readings of temperature and length of the air sample.
- Repeat procedure until room temperature is reached.
- Plot a graph of length (l) against temperature (θ).
- Find the gradient (m) of the best straight line drawn through the plotted points.
- Calculate the y-intercept (c) of the line.
- Calculate absolute zero (θ₀) by substituting l = 0 into the equation.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
