7a - Ch. 4 Lesson 4 Covalent Bonding

1. These three pictures show the covalent bonding of two hydrogen atoms. Describe what is happening in each pictures.

2. Describe what is happening in each picture as the covalent bonding of two hydrogen atoms and one oxygen atom forms a water molecule.

3. When water molecules are broken apart during electrolysis, hydrogen gas (H₂) and oxygen gas (O₂) are formed. Why is twice as much hydrogen gas produced?

4. How many electrons are shared in a double bond?

• 2
• 4
• 8
• 12

5. After the double covalent bond in oxygen is formed, how many electrons are on the outer energy level of each oxygen atom?

• 2
• 4
• 6
• 8
• 10

6. Did you copy the Key Concepts into your notebook?

• Yes
• No

7. Think of one of the demonstrations or experiments in this lesson that you found very memorable. Explain how this demonstration or experiment helped you understand one of the Key Concepts listed above.

8. How do you feel about what you have learned in this lesson?

• 😊 Great! I am confident that I understand the material.
• 🙂 Good, but I still have a question. I will ask the teacher about it by email or in class.
• 😐 OK, but I need more practice. I will read through the lesson and re-watch some of the videos.
• 🤨 I need help. I will review the lesson and make a list of topics that are confusing to me. I will reach out to the teacher for help.