### Identification of the Substance that Combines with Hydrogen to Form Water

To determine which substance combines with hydrogen to form water, we recognize the chemical reaction involved in the formation of water (H₂O).

1. **Chemical Formula of Water**: Water is composed of two hydrogen atoms and one oxygen atom, represented as H₂O.

2. **Analyzing the Given Options**:
- **Oxygen**: H₂ + O₂ → H₂O
- **Helium**: Helium (He) does not react with hydrogen to form any compounds.
- **Silicon**: While silicon can react with hydrogen, it does not form water.
- **Nitrogen**: Hydrogen and nitrogen can combine but do not form water; they produce ammonia (NH₃) instead.

3. **Conclusion**: The only correct option where hydrogen combines to form water is oxygen.

### Final Answer
**Oxygen** is the substance known to form water when it reacts with hydrogen.

Question

### Identification of the Substance that Combines with Hydrogen to Form Water

To determine which substance combines with hydrogen to form water, we recognize the chemical reaction involved in the formation of water (H₂O).

1. **Chemical Formula of Water**: Water is composed of two hydrogen atoms and one oxygen atom, represented as H₂O.

2. **Analyzing the Given Options**: 
   - **Oxygen**: H₂ + O₂ → H₂O
   - **Helium**: Helium (He) does not react with hydrogen to form any compounds.
   - **Silicon**: While silicon can react with hydrogen, it does not form water. 
   - **Nitrogen**: Hydrogen and nitrogen can combine but do not form water; they produce ammonia (NH₃) instead.

3. **Conclusion**: The only correct option where hydrogen combines to form water is oxygen.

### Final Answer
**Oxygen** is the substance known to form water when it reacts with hydrogen.

Knowee AI · Accepted Answer

### Identification of the Substance that Combines with Hydrogen to Form Water

To determine which substance combines with hydrogen to form water, we recognize the chemical reaction involved in the formation of water (H₂O).

1. **Chemical Formula of Water**: Water is composed of two hydrogen atoms and one oxygen atom, represented as H₂O.

2. **Analyzing the Given Options**: 
   - **Oxygen**: H₂ + O₂ → H₂O
   - **Helium**: Helium (He) does not react with hydrogen to form any compounds.
   - **Silicon**: While silicon can react with hydrogen, it does not form water. 
   - **Nitrogen**: Hydrogen and nitrogen can combine but do not form water; they produce ammonia (NH₃) instead.

3. **Conclusion**: The only correct option where hydrogen combines to form water is oxygen.

### Final Answer
**Oxygen** is the substance known to form water when it reacts with hydrogen.

Hydrogen and what other substance is known to form water?Group of answer choicesoxygenheliumsiliconenirogen

Question

Hydrogen and what other substance is known to form water?

Solution

Identification of the Substance that Combines with Hydrogen to Form Water

Final Answer

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