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Science

John1956PA

(4,304 posts)

10. Did the teacher allow you to transfer some of the gases to test tubes?

Reply to electric_blue68 (Reply #8)

Thu May 15, 2025, 08:18 PM

May 15

If a wooden match is struck, and if the resulting flame is blown out, the head of the match will remain glowing for about five seconds. If the glowing match head is inserted into the test tube containing the oxygen gas, the match head will reignite into a flame. If the glowing match head is inserted into the test tube containing the hydrogen gas, there will be a quick "pop" sound, but the match head will not reignite.

Your school's hydrolysis machine was a great teaching device.

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electric_blue68 Bernardo de La Paz

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Hmm...Anyone with enough chemistry kmowledge to guess why some scientists think Mars water broke down into.... [View all] electric_blue68 May 15 OP

It doesn't really need that type of very strong reaction (splitting H2O) to cause water to disappear erronis May 15 #1

Mars is smaller, has substantially less gravity, hence the escape velocity for molecules is much smaller Bernardo de La Paz May 15 #2

The Only Thing I Can Think Of... ProfessorGAC May 15 #3

On earth, hydrolysis creates oxygen and hydrogen by applying an electrical charge through water. John1956PA May 15 #4

In our JHS Science Class we had a Hydrolysist machine! electric_blue68 May 15 #8

Did the teacher allow you to transfer some of the gases to test tubes? John1956PA May 15 #10

Interesting! No, we didn't do that. It was very cool to have that demonstration. electric_blue68 May 15 #11

Hubble Helps Solve The Mystery of Mars' Escaping Water (NASA video) sl8 May 15 #5

Thing is, scenarios based on a thin atmosphere don't explain how it got thin in the first place; except Bernardo de La Paz May 15 #6

I would expect... Chemical Bill May 15 #7

Thanks, everyone! 👍 🔭 ⚗️ electric_blue68 May 15 #9

Short-wavelength UV, particularly before there was enough O2 to form an ozone shield, is all that's needed. eppur_se_muova May 16 #12