❄️ Liquid Nitrogen – Super-Cold Liquid

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🧪 What is liquid nitrogen?

• Nitrogen is a gas that makes up about 78% of the air we breathe.
• When nitrogen gas is cooled to –196°C (–321°F), it turns into a liquid.
• This super-cold liquid is called liquid nitrogen.

👉 It looks like water, but it is extremely cold!

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🧊 What makes liquid nitrogen special?

• It is not poisonous
• It is very, very cold
• It quickly turns back into gas when it warms up
• It creates a fog or white smoke when poured

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🛠️ Uses of liquid nitrogen

🏥 In medicine

• Freezing and removing warts and skin problems
• Preserving blood, cells, and vaccines
• Used in hospitals and labs

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🍨 In food and science

• Making instant ice cream 🍦
• Freezing food very fast to keep it fresh
• Science experiments and demonstrations

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🔬 In technology

• Cooling computers and machines
• Shrinking metals so they fit together tightly
• Used in space and engineering projects 🚀

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⚠️ Is liquid nitrogen safe?

👍 Safe when used properly

• Used by trained adults
• Stored in special containers
• Used with safety gloves and goggles

❌ Dangerous if misused

• Can cause frostbite (freeze skin instantly)
• Can damage eyes
• Breathing too much nitrogen gas can reduce oxygen in the air

👉 Never touch or play with liquid nitrogen

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🧠 Easy to remember

Liquid nitrogen is not poisonous, but it is extremely cold and must be handled carefully ❄️

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⭐ Fun facts for kids

• It boils at room temperature!
• It can freeze a flower and make it shatter 🌸
• It makes clouds that look like magic smoke ✨
• Scientists use it to study space and medicine

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🛑 Important safety rule

🚫 Kids should never handle liquid nitrogen
Always leave it to scientists and trained adults

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