In this experiment, you will calculate the density of the material used to make some slotted masses. You are provided with - five 100 g slotted masses, - an empty 250 $\text{cm}^3$ beaker, - a supply of water, - a 100 $\text{cm}^3$ measuring cylinder, - tweezers or tongs. (i) (i) Record the total mass $M$ of the five slotted masses. $M$ = \_\_\_\_\_\_ (ii) Place the five 100 g slotted masses into the beaker. Pour water from the supply into the beaker until the masses are…

Physics 5054/32 — October/November 2015

Cambridge O-Level · Practical Test · worked solutions for every part, with the mark scheme

questions

marks

120

minutes

Topics Observations and Measurements · Experimental Contexts · Analysis, Conclusions and Evaluation · Use of Techniques, Apparatus and Materials

Q15MObservations and MeasurementsExperimental ContextsUse of Techniques, Apparatus and MaterialsAnalysis, Conclusions and EvaluationFree sample

In this experiment, you will calculate the density of the material used to make some slotted masses.

You are provided with

five 100 g slotted masses,
an empty 250 $\text{cm}^3$ beaker,
a supply of water,
a 100 $\text{cm}^3$ measuring cylinder,
tweezers or tongs.

(a)

(i)

(i) Record the total mass $M$ of the five slotted masses.

$M$ = ______

(ii) Place the five 100 g slotted masses into the beaker. Pour water from the supply into the beaker until the masses are completely immersed and the water level is at the 250 $\text{cm}^3$ mark on the beaker. Carefully remove the masses using the tweezers or tongs without removing any water. Using the measuring cylinder, determine the volume $V$ of water in the beaker.

$V$ = ______

(iii)

Explain the method that you used to determine $V$ .

(iv)

Explain two precautions that you took to determine an accurate value for $V$ .

______
______

(b)

(i) Calculate the total volume $V_S$ of the five slotted masses.

$V_S$ = ______

(ii) Calculate the density $\rho$ of the material used to make the slotted masses using

\rho = \frac{M}{V_S}

$\rho$ = ______

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Q4Observations and Measurements · Experimental Contexts · Analysis, Conclusions and Evaluation15M

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