Complete the following using the correct word given in the brackets.
The density of air is _______than ammonia. (lower/higher) 

Explanation

To solve the question, we need to compare the densities of air and ammonia. Here’s a step-by-step breakdown:

1. **Understanding Density**: Density is defined as mass per unit volume. Different substances have different densities, which can affect their behavior in mixtures.

2. **Properties of Ammonia**: Ammonia (NH₃) is a colorless gas with a pungent odor. It is known to be lighter than air. This means that ammonia has a lower density compared to air.

3. **Comparing Densities**: Since ammonia is lighter than air, it will float in air. This indicates that the density of ammonia is less than that of air.

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