Question 1

Which metal has the highest density?

Accepted Answer

Osmium at 22.59 g/cm³, followed by iridium at 22.56 g/cm³.

Question 2

How do alloy densities compare to pure metals?

Accepted Answer

Alloys have densities between their components. Steel ~7.8 (iron 7.87 + carbon).

Question 3

What's the relationship between density and specific gravity?

Accepted Answer

Specific gravity is density relative to water (1 g/cm³). So a material with SG of 2.5 is 2.5 times denser than water, or 2500 kg/m³.

Question 4

Why does temperature affect density?

Accepted Answer

Most materials expand when heated, decreasing density. Water is unusual - it's densest at 4°C. This is why ice floats.

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