Neco Model Questions Vol1 2020 Physics Question 1

Practice practical question 1 from the 2020 Neco Model Questions Vol1 Physics examination. This question covers Measurements and Units, Density determination .

Neco Model Questions Vol1 2020 Physics Practical

Topics: Measurements and Units Density determination

Question 1 NECO_MODEL_QUESTIONS_VOL1 • 2020 • PHYSICS • practical

An irregular metal specimen is to be identified by determining its density using the water‑displacement method. The mass of the specimen measured on a balance is 125.6 g. The volume of water in a graduated cylinder is 250.0 mL before the specimen is immersed and 260.3 mL after it is completely submerged. Standard densities of possible metals are: - Lead: 11.34 g·cm⁻³ - Copper: 8.96 g·cm⁻³ - Aluminium: 2.70 g·cm⁻³ Using the data above, answer the following:

Question Parts

( a )

Calculate the volume of the metal specimen in cm³.

( b )

Determine the density of the specimen in g·cm⁻³ (give your answer to two decimal places).

( c )

Identify the metal by comparing the calculated density with the standard densities provided.

( d )

If the student incorrectly assumes the metal is copper, calculate the percentage error in the density determination. (Use the copper standard density of 8.96 g·cm⁻³.)

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About This Question

This is Neco Model Questions Vol1 2020 Physics Question 1. It is one of the practical questions from the 2020 Neco Model Questions Vol1 Physics examination.

The question covers Measurements and Units, Density determination .

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