Which of the following are compounds according to scientific meaning?
Sugar, soil, soft drink, brick, hydrochloric acid

Explanation

To determine which of the following substances are compounds according to their scientific meaning, we will analyze each option based on the definition of a compound. A compound is a substance formed when two or more different types of atoms bond together chemically.

### Step-by-Step Solution:

1. **Understanding Compounds**:
- A compound consists of two or more different elements that are chemically bonded together. This can occur through ionic or covalent bonds.

2. **Analyzing Each Option**:
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