What is density?

What is density?

• A. Density is mass per unit volume
• B. Density is temperature
• C. Density is color
• D. Density is shape

Answer: (A)

Density measures how much matter is packed into a given space. It is defined as mass per unit volume, meaning you divide how heavy something is by how much space it takes up. So density = mass / volume. This makes density a property that tells you how heavy a material is for its size. For equal volumes, the object with more mass has higher density; a small cube of metal feels much heavier than a same-sized cube of wood, because the metal packs more mass into the same volume. Common units are kilograms per cubic meter or grams per cubic centimeter. Temperature can influence density because heating often expands a substance (increasing volume and lowering density), but density itself is the ratio of mass to volume, not a property like temperature, color, or shape that describes the object.

Density measures how much matter is packed into a given space. It is defined as mass per unit volume, meaning you divide how heavy something is by how much space it takes up. So density = mass / volume. This makes density a property that tells you how heavy a material is for its size. For equal volumes, the object with more mass has higher density; a small cube of metal feels much heavier than a same-sized cube of wood, because the metal packs more mass into the same volume. Common units are kilograms per cubic meter or grams per cubic centimeter. Temperature can influence density because heating often expands a substance (increasing volume and lowering density), but density itself is the ratio of mass to volume, not a property like temperature, color, or shape that describes the object.