The volume of 50 g of an object is $20 c m^{3}$ . Will the substance float or sink?
[3 marks]

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Solution

Mass of object = 50 g
Volume of the object = $20 c m^{3}$
Density = mass/volume =
( $50 g / 20 c m^{3} = 2.5 g / c m^{3}$ )
[2 marks]
Since density of object is greater than density of water, the object will sink.
[1 mark]

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The volume of 50 g of a substance is $20 c m^{3}$ . If the density of water is $1 g c m^{- 3}$ , will the substance float or sink?

The volume of 50 g of a substance is $20 c m^{3}$ . If the density of water is $1 g c m^{- 3}$ , will the substance float or sink? [3 Marks]

20 c m^{3}

1 g c m^{- 3}

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