A pupil measured the volume of a potato using the items of laboratory equipment, labelled A and B as shown in the diagram. (i) Name the items labelled A and B. A ________________ B ________________ (ii) The potato had mass 175 g and volume 125 cm³. Calculate the density of the potato. Give the units of density with your answer. _________________ _________________ (iii) Why did the potato sink in the water? _________________

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A pupil measured the volume of a potato using the items of laboratory equipment, labelled A and B as shown in the diagram - Junior Cycle Science - Question a - 2009

Question a

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A pupil measured the volume of a potato using the items of laboratory equipment, labelled A and B as shown in the diagram. (i) Name the items labelled A and B. A _... show full transcript

Worked Solution & Example Answer:A pupil measured the volume of a potato using the items of laboratory equipment, labelled A and B as shown in the diagram - Junior Cycle Science - Question a - 2009

Step 1

Name the items labelled A and B.

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Answer

A: Overflow can B: Measuring (graduated) cylinder

Step 2

Calculate the density of the potato.

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Answer

To find the density, use the formula:

ext{Density} = \frac{\text{mass}}{\text{volume}}

Substituting the values:

\text{Density} = \frac{175 \text{ g}}{125 \text{ cm}^3} = 1.4 \text{ g/cm}^3

Step 3

Why did the potato sink in the water?

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Answer

The potato sank in the water because it is denser than the water. The density of the potato (1.4 g/cm³) is greater than the density of water (1 g/cm³).

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