Question

cms physical science unit 1 summative assessment
9 of 20
a student investigated the density of various liquids. he used water, vegetable oil, and dishwashing soap in the investigation. he put two of the liquids in three different beakers.
which conclusion can be made about the density of the liquids?
water has the lowest density and vegetable oil has the highest density.
dishwashing soap has the lowest density and water has the highest density.
dishwashing soap has the lowest density and vegetable oil has the highest density.
vegetable oil has the lowest density and dishwashing soap has the highest density.

Explanation:

Step1: Recall density - liquid behavior principle

Lighter - density liquids float on top of heavier - density liquids.

Step2: Analyze the beaker images

In all beakers, vegetable oil is on top of water and soap, and soap is at the bottom in the first two beakers and water is on top of soap in the third beaker.

Step3: Determine density order

Since vegetable oil floats on both water and soap, it has the lowest density. Since soap is at the bottom in most cases compared to water and oil, it has the highest density.

Answer:

Vegetable oil has the lowest density and dishwashing soap has the highest density.