Question

density is a physical property of matter that can be calculated if the mass and volume are known. the formula for density is: d = m/v. in the examples on this page, mass is in grams. liquid volume is in milliliters and the volume of the solid objects is in cubic centimeters.
the following list contains information for four liquids and two solid objects. complete the density table below by determining the density of each object.

• a yellow liquid with a mass of 2.8 g and a volume of 2 ml
• a green liquid with a mass of 6 g and a volume of 3 ml
• a red liquid with a mass of 1.8 g and a volume of 2 ml
• an orange liquid with a mass of 1.3 g and a volume of 1 ml
• a blue cube with a mass of.8 g and a volume of 2 cm³
• a pink star with a mass of 2.4 g and a volume of.8 cm³

object	mass (g)	volume (ml or cm³)	density (g/ml or g/cm³)
green liquid
red liquid
orange liquid
blue cube
pink star

1. which liquid is the most dense? ____________
2. which liquid is the least dense? ____________
3. which object will settle to the bottom? ____________

use colored pencils to sketch the liquid layers in the container on the right. add the two solid objects at the appropriate locations.

Explanation:

Step1: Recall density formula

$D = \frac{m}{v}$

Step2: Calculate yellow liquid density

$D_{yellow}=\frac{2.8}{2}=1.4$ g/mL

Step3: Calculate green liquid density

$D_{green}=\frac{6}{3}=2$ g/mL

Step4: Calculate red liquid density

$D_{red}=\frac{1.8}{2}=0.9$ g/mL

Step5: Calculate orange liquid density

$D_{orange}=\frac{1.3}{1}=1.3$ g/mL

Step6: Calculate blue cube density

$D_{blue}=\frac{0.8}{2}=0.4$ g/$cm^{3}$

Step7: Calculate pink star density

$D_{pink}=\frac{2.4}{0.8}=3$ g/$cm^{3}$

Step8: Compare liquid densities for 1 and 2

By comparing 1.4, 2, 0.9, 1.3, green liquid is most dense and red liquid is least dense.

Step9: Determine object to settle

Higher - density objects settle. Pink star has highest density among all objects, so it will settle to the bottom.

Answer:

Object	Mass (g)	Volume (mL or $cm^{3}$)	Density (g/mL or g/$cm^{3}$)
green liquid	6	3	2
red liquid	1.8	2	0.9
orange liquid	1.3	1	1.3
blue cube	0.8	2	0.4
pink star	2.4	0.8	3

1. green liquid
2. red liquid
3. pink star