Question

For experiments to demonstrate water displacement:

Add water to the narrow transparent container until it is about half full.
a) True
b) False

Answer 1

True, Experiments involving water displacement typically start with the container about half full to allow room for the displacement measurement. This technique is utilized for determining object density and collecting gases in laboratory experiments.

Step-by-step explanation:

For experiments to demonstrate water displacement, it is generally advisable to add water to the narrow transparent container until it is about half full. This practice ensures that there is enough space for the water level to rise when an object is submerged in it, allowing for precise measurement of the volume of the displaced water. This technique is essential in various experiments, including those aimed at determining the density of an object by submerging it in water, or collecting gases produced in a chemical reaction through water displacement.

For instance, when determining the density of an object like a piece of rebar, the initial volume of water in the graduated cylinder is noted before the rebar is submerged. The increase in water level indicates the volume of the rebar by the displaced water. Similarly, during gas collection, a bottle is filled and inverted over water, and as the gas is produced, it displaces water in the bottle, capturing the gas for further study.