What is density

Density is the badass measure of how tightly packed the molecules in a substance are—think of it as blockiness on a molecular level. It’s calculated by dividing mass by volume (Density = Mass/Volume), making it the ultimate litmus test for whether something sinks or floats. A high density (like lead) tells you the atoms are packed in like sardines, while something with low density (like cork) is basically just fluffy. Want to feel like a scientific boss? Grab a digital scale to measure mass perfectly and understand the density of whatever you’re curious about.