Question

1. explain how to calculate density, and describe how mass and volume are measured.

Explanation:

Density is calculated using the formula \(d=\frac{m}{V}\), where \(m\) is mass and \(V\) is volume. Mass is measured using scales (e.g., triple - beam balance, digital scale) which compare the object's mass to known standards. For regular - shaped solids (e.g., cube, rectangular prism), volume is calculated using geometric formulas (\(V = l\times w\times h\) for a rectangular prism). For irregular - shaped solids, the displacement method is used (submerge the object in a graduated cylinder with a known volume of liquid and measure the increase in volume). For liquids, volume is directly measured using graduated cylinders or burettes.

Answer:

Density is calculated as \(d = \frac{m}{V}\). Mass is measured with scales. Volume of regular solids via geometric formulas, irregular solids via displacement, and liquids with graduated cylinders/burettes.