Essential Questions
1. How does neon's unique properties as a cryogenic refrigerant contribute to its effectiveness?
2. In what ways is neon utilized in light sources, specifically signs and lasers?
3. What is involved in the isolation of neon from liquid air?
4. Why is neon classified as a noble gas?
5. Who was responsible for the discovery of the element neon and what was the process?
6. What are some instances where neon's typically unreactive nature does not apply?
Learning Objectives
1. Identify the element neon on the periodic table 2. Explain the properties of the element neon
3. Understand the uses of neon, including its use as a cryogenic refrigerant and in light sources 4. Understand the relationship between the properties of neon and its rarity on Earth
5. Identify the discoverers of the element neon and the process of its discovery 6. Explain the concept of excimers and provide examples
7. Understand the process of isolating the element neon Questions
1. What is the color of neon gas when it is exposed to an electrical current?
A. Yellow B. Blue C. Red-orange D. Green
○ Correct answer: C. Red-orange 2. How many valence electrons does neon have?
A. 2 B. 6 C. 10 D. 8
○ Correct answer: D. 8
3. In what form is neon used as a cryogenic refrigerant?
A. Plasma B. Gas C. Liquid D. Solid
○ Correct answer: C. Liquid
4. Why is neon considered rare and expensive on Earth?
A. It is heavy B. It is reactive C. It is abundant D. It is nonreactive
○ Correct answer: D. It is nonreactive 5. Where is neon mostly used as a light source?
A. Homes B. Offices C. Signs D. Factories
○ Correct answer: C. Signs
6. Who discovered the element neon in 1898?
A. Isaac Newton B. Marie Curie C. William Ramsay D. Albert Einstein
○ Correct answer: C. William Ramsay 7. What does the name 'neon' mean in Greek?
A. Colorful B. Light C. New D. Bright
○ Correct answer: C. New 8. Why is neon considered an inert gas?
A. It is highly reactive
B. It has a complete octet of electrons C. It reacts with other elements D. It is unstable
○ Correct answer: B. It has a complete octet of electrons
9. What is the term for short-lived dimeric molecules that neon can form?
A. Excimers B. Monomers C. Dimers D. Excitons
○ Correct answer: A. Excimers 10. How is neon isolated from liquid air?
A. By contact with activated charcoal B. By distillation
C. By filtration D. By electrolysis
○ Correct answer: A. By contact with activated charcoal
