If you double the amount of matter, which property would double?

If you double the amount of matter, which property would double?

• A. Mass
• B. Colour
• C. Density
• D. Temperature

Answer: (A)

Mass is a measure of how much matter something contains, so when you double the amount of matter, its mass doubles as well. Colour isn’t tied to how much substance you have—the same material can be more or less in quantity without changing colour. Temperature depends on energy and heat exchange, not just how much matter is present. Density is mass per volume, so if you keep the volume the same, doubling the mass would double the density; but that depends on keeping volume constant. The direct, consistent outcome of doubling the amount of matter is that mass doubles.

Mass is a measure of how much matter something contains, so when you double the amount of matter, its mass doubles as well. Colour isn’t tied to how much substance you have—the same material can be more or less in quantity without changing colour. Temperature depends on energy and heat exchange, not just how much matter is present. Density is mass per volume, so if you keep the volume the same, doubling the mass would double the density; but that depends on keeping volume constant. The direct, consistent outcome of doubling the amount of matter is that mass doubles.