What do you need to know to calculate the density of a liquid?

Question

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1 point
weight and volume
mass and volume
volume and temperature
weight and temperature

Answer 1

To calculate the density of a liquid, you need to know its mass (measured in grams or kilograms) and its volume (measured in liters or milliliters). So the correct answer is: mass and volume.

Answer 2

How could you separate iron fillings from sand?
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1 point
Using a magnet
Using water and a filter
Using tweezers
Using distillation

Answer 3

The correct answer is: Using a magnet. Iron fillings are magnetic and can be separated from sand by using a magnet.