Examples of Inert Gases (Noble Gases) for 7th Grade

📚 Quick Study Guide

• ⚛️ Inert gases, also known as noble gases, are a group of elements that are very stable and don't easily form chemical bonds with other elements. This is because their outermost electron shell is completely full.
• 🧪 The noble gases are: Helium (He), Neon (Ne), Argon (Ar), Krypton (Kr), Xenon (Xe), and Radon (Rn).
• 💡 They are found in Group 18 (VIII A) of the periodic table.
• 🎈 Helium is lighter than air and used in balloons.
• ✨ Neon is used in bright advertising signs.
• 🌍 Argon is the most abundant noble gas in Earth's atmosphere.
• ☢️ Radon is radioactive and can be harmful.

Practice Quiz

1. Which of the following is NOT an inert gas?
   1. Helium
   2. Neon
   3. Oxygen
   4. Argon
2. What is another name for inert gases?
   1. Reactive metals
   2. Noble gases
   3. Halogens
   4. Alkali metals
3. Which inert gas is used in balloons because it is lighter than air?
   1. Neon
   2. Argon
   3. Helium
   4. Krypton
4. Which group number on the periodic table contains all the inert gases?
   1. Group 1
   2. Group 2
   3. Group 17
   4. Group 18
5. Which inert gas is commonly used in advertising signs?
   1. Helium
   2. Neon
   3. Argon
   4. Radon
6. Which of the following statements is TRUE about inert gases?
   1. They easily form chemical bonds.
   2. They have a full outermost electron shell.
   3. They are highly reactive.
   4. They are all radioactive.
7. Which inert gas is the most abundant in Earth's atmosphere?
   1. Helium
   2. Neon
   3. Argon
   4. Krypton