Question

1. why are dots used to represent mass?
2. rock a is 2 cm3 and has a mass of 4 g. a model of that is shown below. draw a model of rock b that half the volume and the same mass.

rock a
rock b
4 g
4 g

1. which is more dense? how do you know?

Explanation:

Answer:

1. Dots represent individual particles or units of matter within a defined space.
2. Rock B should be drawn with 4 dots inside a single box (half the size of Rock A's container).
3. Rock B is more dense because it has the same mass ($4\text{ g}$) packed into a smaller volume ($1\text{ cm}^3$), resulting in a higher concentration of particles.